scholarly journals Karakteristik Komposit Bioplastik dalam Variasi Rasio Pati Gadung (Dioscorea hispida D.) - Glukomanan dan Suhu Gelatinisasinya

2021 ◽  
Vol 9 (2) ◽  
pp. 166
Author(s):  
Ni Luh Feby Putri Pratami ◽  
Amna Hartiati ◽  
Bambang Admadi Harsojuwono
Keyword(s):  
Tensile Strength ◽  
Manufacturing Process ◽  
Block Design ◽  
Gelatinization Temperature ◽  
Elongation At Break ◽  
Starch Gelatinization ◽  
Randomized Block Design ◽  
Two Factors ◽  
Degradation Time

This study aims to determine the effect of variations in the ratio of gadung starch (Dioscorea hipida D.) - glucomannan and their interaction on the characteristics of bioplastic composites and to determine the ratio of gadung starch (Dioscorea hipida D.) - glucomannan and its gelatinization temperature which gives the best characteristics of bioplastic composites. This study used a factorial randomized block design (RBD) with two factors. The first factor is the variation in the ratio of the gadung tuber starch - glucomannan which consists of 3 levels, namely (60:40), (50:50), (40:60). The second factor is the gelatinization temperature which consists of 3 levels, namely 75 ± 1oC, 80 ± 1oC 85 ± 1oC. Each treatment was grouped into 2 based on the time of the manufacturing process so that 18 experimental units were obtained. The variables observed were tensile strength, elongation at break, elasticity, and biodegradation time. The data obtained were analyzed of variant and continued with the HSD Tukey. The results showed that the ratio of gadung - glucomannan starch, gelatinization temperature, and their interactions had a very significant effect on tensile strength, elongation at break, and elasticity but it did not significantly affect the biodegradation time. The ratio of gadung tuber starch - glucomannan (60:40) with a gelatinization temperature of 85 ± 1oC produced the best bioplastic characteristics with a tensile strength value of 4.4 MPa, an elongation at break of 9.5%, and elasticity value of 22.390 MPa and resulted in a degradation time of 7 days. 2 variables meet the standards, namely: the extension when the bioplastic composites have broken up has met the SNI plastic standards and biodegradation has met the international plastic standard ASTM 5336. Keywords: bioplastic, composite, gadung starch, gelatinization temperature, glucomannan,

scholarly journals KARAKTERISTIK KOMPOSIT BIOPLASTIK GLUKOMANAN DAN MAIZENA DALAM PENGARUH VARIASI SUHU DAN WAKTU GELATINISASI

2019 ◽  
Vol 7 (3) ◽  
pp. 468
Author(s):  
Cintia Indrawati ◽  
Bambang Admadi Harsojuwono ◽  
Amna Hartiati
Keyword(s):  
Tensile Strength ◽  
Block Design ◽  
Young Modulus ◽  
Temperature Treatment ◽  
Gelatinization Temperature ◽  
Design Factor ◽  
Elongation At Break ◽  
Randomized Block Design ◽  
Group Profile ◽  
Degradation Time

The aim of this study was to determine the effect of the temperature and time of gelatinization and its interactions on the composite characteristics of bioplastics glucomannan and cornstarch with to obtain gelatinization temperature and time to produce the best bioplastic glucomannan and cornstarch composites. This study used factorial randomized block design. Factor 1 gelatinization temperature consisting of 3 levels, namely 70 ± 1; 75 ± 1; 80 ± 1°C. Factor 2 is gelatinization time, for 2, 3 and 4 minutes. Variables observed included tensile strength, elongation at break, young modulus, swelling, biodegradation and functional group profile. The data were analyzed for diversity and continued with the BNJ test. The results showed that the temperature and time of gelatinization and their interactions had a very significant effect on tensile strength and elasticity. The temperature and time of gelatinization had a very significant effect but did not interact with elongation and did not significantly affect the swelling and biodegradation of bioplastic composites. The best bioplastic glucomannan and maizene composites were at a temperature treatment of 80 ± 1°C and 4 minutes gelatinization time with tensile strength characteristics (3.390 mpa); elasticity (35.811 mpa); elongation at break (12.3%); swelling (68.13%); degradation time of 8 days and contains hydroxyl (O–H) functional groups, alkene (C– H), carboxyl (C–O), carbonyl (C=O) and alkyne (C?C). Keywords : Composites bioplastic, glucomannan, maizena, temperature and time of gelatinization

scholarly journals Pengaruh Campuran dan Rasio Bahan Pembentuk Komposit terhadap Karakteristik Komposit Bioplastik

2021 ◽  
Vol 9 (2) ◽  
pp. 157
Author(s):  
Syah Banu Putra Sitepu ◽  
Bambang Admadi Harsojuwono ◽  
Amna Hartiati
Keyword(s):  
Tensile Strength ◽  
Composite Material ◽  
Composite Materials ◽  
Design Method ◽  
Block Design ◽  
Elongation At Break ◽  
Factor I ◽  
Method Factor ◽  
Randomized Block Design ◽  
Multiple Comparison Test

This research aims to determine the effect of the mixture and the ratio of the composites and their interactions to the characteristics of the bioplastic composites and to determine the mix and ratio of the composites that produce the best characteristics of the bioplastic composites. The experimental design of this study used a randomized block design method. Factor I is a mixture of composite materials consisting of maizena-glucomannan, maizena-chitosan, and maizena-carrageenan. The second factor is the ratio of the composite material mixture which consists of 5 levels, namely 100: 0, 75:25, 50:50, 25:75 and 0: 100. The experiment resulted in 15 treatment combinations and were grouped into 2 groups when the process of making bioplastic composites was obtained, so that 30 experimental units were obtained. Data were analyzed for their diversity and continued with Duncan's multiple comparison test. The observed variables which tensile strength, elongation at break, modulus young, swelling, and biodegradation time. The results showed that the mixture and the ratio of the composites forming a very significant effect on tensile strength, elongation at break, elasticity, and swelling. The interaction has a very significant effect on tensile strength, elasticity and swelling and significantly affects the elongation at break of bioplastic composites. Meanwhile, the mixture and the ratio of the ingredients to form the composites had no significant effect on the biodegradation time. Maizena:glucomannan composite with ratio (25:75) produced the best characteristics of bioplastic composites with tensile strength values of 6.99 MPa, elongation at break of 16.5%, elasticity 42.39 MPa, swelling 78.78% and biodegradable time of 7 days. There are 2 variables that have met the standard, namely: elongation at break of bioplastic composites that meet the plastic Standard SNI 7188.7: 2016 and biodegradation time has met the international plastic standard ASTM 5336 and 3 variables that do not meet the standards, namely: Tensile strength (6,99 MPa) and elasticity (42,39 MPa) do not meet the Plastic Standard SNI 7188.7: 2016 and swelling (39,1%) does not meet international plastic standards (EN 317). Keywords : bioplastic composites, maizena, glucomannan, chitosan, carrageenan

scholarly journals Karakteristik Komposit Bioplastik Dalam Variasi Rasio Pati Umbi Talas (Xanthosoma sagittifolium)-Kitosan

2020 ◽  
Vol 5 (2) ◽  
pp. 75
Author(s):  
Esmeralda Oktaviani Simarmata ◽  
Amna Hartiati ◽  
Bambang Admadi Harsojuwono
Keyword(s):  
Tensile Strength ◽  
Block Design ◽  
Ftir Analysis ◽  
Elongation At Break ◽  
Randomized Block Design ◽  
Xanthosoma Sagittifolium ◽  
Honestly Significant Difference ◽  
Significant Difference ◽  
Difference Test ◽  
Honestly Significant Difference Test

This research aims to know the effect of variations in the ratio of taro-chitosan tuber starch to the characteristics of bioplastic composites and determine the ratio of taro-chitosan tuber starch that produces the best bioplastic composites. This research uses a Factorial Randomized Block design with taro-chitosan tuber starch ratio variation factor in  five level (40: 60%, 35: 65%, 30: 70%, 25: 75% and 20: 80%). The treatments which grouped into 3 based on the time of making bioplastics, so there are 15 experimental units. The observed variables which tensile strength, elongation at break, modulus young, swelling development, biodegradation and FTIR test. The obtained data were analyzed for diversity and continued with the Honestly Significant Difference test. The results showed that the variation of the taro-chitosan tuber starch ratio significantly affected the tensile strength, elongation at break, modulus young, and swelling development but did not significantly affected the biodegradation of the bioplastic composites of taro-chitosan tuber starch. Variation of taro-chitosan tuber starch ratio 35: 65% produces the best bioplastic composite characteristics with tensile strength values 3.15 MPa, elongation at break 21.33%, modulus young of 14.87 MPa, swelling development test 29.69% and biodagradation ability for 13 days. FTIR analysis results show the presence of hydroxyl (O-H) alcoholic groups, (O-H) Carboxylic acid, (C = O) esters, (C - H) alkana,  (C=C) alkena , and hydrocarbons - (CH2) n.

scholarly journals PENGARUH KONSENTRASI PATI UBI TALAS (Colocasia esculenta) DAN JENIS PLASTICIZER TERHADAP KARAKTERISTIK BIOPLASTIK

2019 ◽  
Vol 7 (3) ◽  
pp. 457
Author(s):  
Farida Unggul Situmorang ◽  
Amna Hartiati ◽  
Bambang Admadi Harsojuwono
Keyword(s):  
Tensile Strength ◽  
Young’S Modulus ◽  
Young's Modulus ◽  
Block Design ◽  
Colocasia Esculenta ◽  
Ftir Analysis ◽  
Elongation At Break ◽  
Randomized Block Design

This study aims to know the effect of the concetration of taro tuber starch and plasticizer type and their interactions on the characteristics of bioplastics, and to determine the concentration of taro tuber starch and plasticizer type which produces bioplastics with the best characteristics. The research used factorial randomized block design. The first factor is the concentration of taro tuber starch consisting of 3 levels 5, 6 and 7% (w/w). The second factor is the plasticizer type consisting of 3 levels that is glycerol, sorbytol and mixture plasticizer glycerol and sorbitol (1:1). Each treatment are grouped into two time-based of making bioplastics so there are 18 experimental units. Variabels observed tensile strength, elongation at break, Young’s modulus, swelling, biodegradation and FTIR. The data obtained were analyzed of variant and test Tukey’s. The result showed that the concentration of taro tuber starch and type of plasticizer had a very significant effect on tensile strength, elongation at break, Young’s Modulus and swelling but the type of plasticizer had no significant effect on biodegradation. Interaction between treatments has a very significant effect on Young’s Modulus and swelling, a significant effect on tensile strength and no significant effect on elongation at break and biodegradation. The concentration of starch 6% with plasticizer glycerol produces the best characteristics of bioplastics with tensile strength 2.270 0.057 MPa, elongation at break 14.5 0.01 %, Young’s modulus 15.683 1.155 MPa, swelling 29.88 1.02 % and biodegradability 6-7 days. FTIR analysis proved the existence of hydroxyl (O-H), carbonyl (C=O), C=C aromatic, carboxyl (C-O), C-H aromatic, and hydrocarbons –(CH2)n in the bioplastic. Keywords: Bioplastics, concentration of taro tuber starch, glycerol, sorbytol  

scholarly journals Karakteristik Komposit Bioplastik dalam Variasi Rasio Maizena-Glukomanan dan Jenis Pemlastis

2021 ◽  
Vol 9 (1) ◽  
pp. 99
Author(s):  
I Pt Cahya Wisnawa P ◽  
Bambang Admadi Harsojuwono
Keyword(s):  
Tensile Strength ◽  
Propylene Glycol ◽  
Block Design ◽  
Elongation At Break ◽  
Randomized Block Design

This study aims to determine the effect of variations in the ratio of cornstarch-glucomannan and types of plasticizer on the characteristics of bioplastic composites to produce the best bioplastic composites. This study uses the two factorial randomized block design. The first factor is the variation in the ratio of cornstarch-glucomannan which consists of three levels, namely 5:1 ; 4,5:1,5 ; 4:2. The second factor is the type of plasticizer, namely glycerol, sorbitol, and propylene glycol. Each treatment was devided  into two groups based on the time of making the bioplastic, so that 18 experimental units are obtained. The variables observed were tensile strength, elongation at break, elasticity, swelling, and biodegradation. The  data  obtained  were  analyzed  for  diversity  and  continued  with  a  test  of  Significant  Honest Difference. The results show that the variation of the cornstarch-glucomannan ratio and the type of plasticizer and their interactions had a very significant effect on tensile strength, elongation at break, and elasticity. The variation in the ratio of cornstarch-glucomannan and the type of plasticizer had a very significant effect, but the interaction had a significant effect on swelling. The best bioplastic characteristics are found in the variations of cornstarch-glucomannan (4:2) with the type of glycerol plasticizer with a tensile strength value of 5.685 MPa, elongation at break of 20,110%, elasticity of 26,735 MPa, swelling of 1.149%, duration of degradation is 6 days. Keywords: bioplastics, cornstarch-glucomannan ratio, glycerol, propylene glycol, sorbitol

scholarly journals Pengaruh Jenis dan Konsentrasi Filler terhadap Karakteristik Bioplastik dari Tepung Maizena

2020 ◽  
Vol 8 (4) ◽  
pp. 580
Author(s):  
Parngoluan Hutabalian, ◽  
Bambang Admadi Harsujowono ◽  
Amna Hartati
Keyword(s):  
Tensile Strength ◽  
Block Design ◽  
Filler Concentration ◽  
Elongation At Break ◽  
Randomized Block Design ◽  
Tensile Strenght

This study aims to determine the effect of filler types and concentrations and their interactions on the characteristics of bioplastics and to determine the concentrations and types of fillers that produce bioplastics with the best characteristics. This research used factorial randomized block design. The first factor is the type of filler consisting of 3 levels that is ZnO, clay, CaCO3. The second factor is the filler concentration consisting of 3 levels 0, 3, 6, and 9% (w/w). Each treatment are grouped into two time-based of making bioplastics, so there are 24 experimental units. The variabels observed were tensil strength, elongation at break, modulus young, swelling, and biodegradation. The data obtained were analyzed of variant and test Tukey’s. The results showed that the concentration and type of filler had a very significant effect on tensile strenght, elongation at break, modulus young and swelling but had no significant effect on the biodegradation value. The 9% concentration with ZnO filler produced the best bioplastic characteristics with a tensile strength value  4.11 MPa, elongation at break 31.16%, modulus young 7.06 MPa, swelling 55.01%, and biodegradability for 6-7 days.  Keywords: Bioplastics, filler concentration, ZnO, clay, CaCO3

scholarly journals Pengaruh Konsentrasi Seng Oksida (ZnO) dan Penambahan Gliserol terhadap Karakteristik Bioplastik dari Pati Umbi Gadung (Dioscorea hispida Deenst)

2019 ◽  
Vol 7 (4) ◽  
pp. 531
Author(s):  
Wijaya Saputra ◽  
Amna Hartiati ◽  
Bambang Admadi Harsojuwono
Keyword(s):  
Tensile Strength ◽  
Zinc Oxide ◽  
Water Vapor ◽  
Transmission Rate ◽  
Block Design ◽  
Water Vapor Transmission Rate ◽  
Renewable Materials ◽  
Elongation At Break ◽  
Randomized Block Design ◽  
Water Vapor Transmission

Bioplastics are a type of plastic made from renewable materials such as starch. A study aims to determine the effect of addition zinc oxide (ZnO) and the of glycerol and this interaction to the characteristics of the bioplastik starch dioscorea hispida and determine the addition of zinc oxide (ZnO) and the of glycerol to produce bioplastiks from starch dioscorea hispida with the best characteristics. This study uses factorial randomized block design. The first factor is the addition of zinc oxide (ZnO) which consists of 3 levels, namely 8, 9 and 10% (from 6 grams of starch). The second factor is the addition of glycerol which consists of 3 levels, namely 1; 1.5 and 2 grams. Each treatment is grouped into 2 based on production time, so that 18 units are obtained. The variables observed were tensile strength, elongation at break, elasticity, biodegradation, water absorption, water vapor transmission rate. The data obtained were analyzed for diversity and continued with a test of Significant Honest Difference. The results showed that the addition of zinc oxide and the glycerol have a very significant effect on tensile strength, elongation at break, elasticity, development and transmission of water vapor. While the interaction of the concentration of zinc oxide (ZnO) and the addition of glycerol have a very significant effect on tensile strength and elongation at break and have a significant effect on elasticity and development. The treatment of 10% addition with 1 gram of glycerol is the best characteristic of bioplastic dioscorea hispida denst with a tensile strength value of 1.385 ± 0.007 MPa; elongation 10.2±0.014 %; elasticity 13.995±0.204 MPa; swelling 13.5±0.007 %; Water Vapour Transmition 0.0053±0,013 g/hour.m2; biodegradation ability of 7 days. Keywords: bioplastics, ZnO, glycerol, Dioscorea hispida Deenst.

scholarly journals STUDI SUHU DAN pH GELATINISASI PADA PEMBUATAN BIOPLASTIK DARI PATI KULIT SINGKONG

2019 ◽  
Vol 7 (3) ◽  
pp. 441
Author(s):  
Dewa Made Dwi Pradana Putra ◽  
Bambang Admadi Harsojuwono ◽  
Amna Hartiati
Keyword(s):  
Tensile Strength ◽  
Experimental Design ◽  
Block Design ◽  
Agricultural Technology ◽  
Effect Of Temperature ◽  
Temperature Ratio ◽  
Randomized Block Design ◽  
Two Factors ◽  
Analysis Laboratory ◽  
Cassava Peel

The purpose of this study was to determine the effect of temperature and pH on the gelatinization process of cassava peel starch on the characteristics of bioplastics and determine the temperature and pH in the gelatinization process of cassava peel starch to produce the best characteristics of bioplastics. This research was carried out in the Faculty Food Analysis laboratory, Agricultural Technology Natural Resources (PSDA) laboratory, Production Laboratory of the Faculty of Engineering and Bioscience laboratory, Udayana University. This research was conducted from February to March 2018. The experimental design in this study was factorial Randomized Block Design (RBD) with two factors. Based on the analysis in the research conducted, getting conclusions, namely temperature and pH and their interactions have a large influence on tensile strength, elongation and elution, in the manufacture of bioplastics from cassava peel starch and samples of best cassava peel starch bioplastic found at a temperature ratio of 75? and pH5 with a tensile strength characteristic of 1.181Mpa, the breakdown extension was 13.591% and the elasticity was 8.744MPa. Keywords : temperature, pH , gelatinization, bioplastics

scholarly journals Karakteristik Komposit Bioplastik pada Variasi Perbandingan Campuran Pati Gadung (Dioscorea hispida Deenst.) dan Karagenan (Carrageenan)

2020 ◽  
Vol 8 (4) ◽  
pp. 484
Author(s):  
Fransiskus Yuven Wara ◽  
Amna Hartiati ◽  
Bambang Admadi Harsojuwono
Keyword(s):  
Tensile Strength ◽  
Block Design ◽  
National Standard ◽  
Thickness Swelling ◽  
Elongation At Break ◽  
Randomized Block Design ◽  
Comparative Treatment

This study aims to determine the effect of the comparison of the mixture of yam starch (Dioscorea hypida D.) and carrageenan on the characteristics of bioplastic composites and on determining the comparison of the mixture of yam starch (Dioscorea hipida D.) and carrageenan (Carrageenan) which gives the best bioplastic composite characteristics. This study used a randomized block design (RBD) with a comparative treatment of the mixture of yam starch and carrageenan as follows (70: 30), (60: 40), (50: 50), (30: 70), (40: 60), Each treatment was grouped into 3 based on the time of making process so that 15 experimental units were obtained. The variables observed in this study were tensile strength, elongation at break, elasticity, swelling thickness and biodegradation time. The results showed that the comparison of the mixture of starch and carrageenan significantly affected the tensile strength, elongation at break, elasticity and did not significantly affect the development of thickness (swelling) and biodegradation time. A ratio of yam tubers starch with carrageenan on 50:50, produces the best yam tuber bioplastics, but does not meet the Indonesian national standard (SNI) with the characteristic tensile strength of 3.60 Mpa, elongation at break of 25.373 ± 0.830%, elasticity of 14.219 ± 0.866 Mpa, swelling of 28.3 ± 1.681%, biodegradation time of 6.667 ± 0.577 days. Keywords: yam starch, carrageenan, composites, bioplastics

PENGARUH KOMPOS SAMPAH KOTA DAN PUPUK KANDANG SAPI TERHADAP PERTUMBUHAN DAN HASIL TANAMAN PAKCOY (BRASSICA RAPA, L. CHINENSIS) PADA ALUVIAL KABUPATEN INDRAMAYU

2018 ◽  
Vol 9 (2) ◽  
pp. 153-163
Author(s):  
Wiwik Ambarsari ◽  
Henly Yuliana
Keyword(s):  
Plant Height ◽  
Brassica Rapa ◽  
Block Design ◽  
Cattle Manure ◽  
Growth And Yield ◽  
Randomized Block Design ◽  
Two Factors ◽  
Number Of Leaves ◽  
Experimental Garden

The study aimed to determine the effect of the combination of city waste compost and cattle manure on the growth and yield of pakcoy plants (Brassica rapa, L. Chinensis) in Aluvial, Indramayu Regency. The study was conducted at the Experimental Garden of the Faculty of Agriculture, Wiralodra University, Indramayu Regency from March to August 2018. This study used Factorial Pattern Randomized Block Design with two factors. The first factor is city waste compost and the second factor is cattle manure with 4 levels: 0%, 3.0%, 6.0%, and 9.0%, repeated twice. The results showed that there was an independent influence between city waste compost and cattle manure on plant height and number of leaves. The best combination to increase the feasibility weight of pakcoy consumption is by giving city waste compost 9.0% (S4) and cattle manure 6.0% (K3).

Sign in / Sign up

Export Citation Format

Share Document