scholarly journals Synthesis and Characterization of Biodegradable Blend based on LDPE/cassava stem nanofiber cellulose

2021 ◽  
Vol 6 (1) ◽  
pp. 8-17
Author(s):  
L Lismeri ◽  
N Herdiana ◽  
D Kameswara ◽  
P S Anungputri ◽  
Y Darni ◽  
...  
Keyword(s):  
Organic Material ◽  
Water Resistance ◽  
Environmental Problem ◽  
Biodegradable Plastic ◽  
Synthesis And Characterization ◽  
Plastic Films ◽  
Degradation Test ◽  
Cassava Stem ◽  
Degradation Time

Conventional plastic becomes trend topic due to its long degradation time and needs attention related to environmental problem. One type of plastic that is difficult to be degraded is LDPE. Some of the efforts done is to synthesize plastics with organic material so that it becomes biodegradable plastic. Cellulose is an organic material that is abundant in nature and can be used as a filler. This research aims to synthesis the biodegradable plastic films composted by nanocellulose – LDPE. Mechanical (UTM), water resistance and degradation test has been done. The properties of the biodegradable blend still meet the commercial LDPE standart. Even though the biocomposite based on LDPE-nanofiber cellulose can not totally degradable but it is can be used as a solution to reduce the degradation time of a plastic waste.

scholarly journals Semi-Crystalline Hydrophobic Polyamidoamines: A New Family of Technological Materials?

Polymers ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1018
Author(s):  
Massimo Marcioni ◽  
Jenny Alongi ◽  
Elisabetta Ranucci ◽  
Mario Malinconico ◽  
Paola Laurienzo ◽  
...  
Keyword(s):  
Maximum Stress ◽  
Water Resistance ◽  
Prolonged Exposure ◽  
Water Soluble ◽  
Synthesis And Characterization ◽  
Molecular Weights ◽  
New Family ◽  
Methylene Groups ◽  
Methane Flame

The hitherto known polyamidoamines (PAAs) are not suitable as structural materials because they are usually water-soluble or swellable in water. This paper deals with the synthesis and characterization of semi-crystalline hydrophobic PAAs (H-PAAs) by combining different bis-sec-amines with bis-acrylamides obtained from C6–C12 bis-prim-amines. H-PAAs were initially obtained in a solution of benzyl alcohol, a solvent suitable for both monomers and polymers. Their number average molecular weights, M¯n, which were determined with 1H-NMR by evaluating the percentage of their terminal units, varied from 6000 to >10,000. The solubility, thermal properties, ignitability and water resistance of H-PAAs were determined. They were soluble in organic solvents, semi-crystalline and thermally stable. The most promising ones were also prepared using a bulk process, which has never been previously reported for PAA synthesis. In the form of films, these H-PAAs were apparently unaffected by water. The films underwent tensile and wettability tests. They showed similar Young moduli (260–263 MPa), whereas the maximum stress and the stress at break depended on the number of methylene groups of the starting bis-acrylamides. Their wettability was somewhat higher than that of common Nylons. Interestingly, none of the H-PAAs considered, either as films or powders, ignited after prolonged exposure to a methane flame.

Synthesis and Characterization of a Novel Waterborne Polyurethane Modified by Tung Oil

2014 ◽  
Vol 513-517 ◽  
pp. 251-254 ◽  
Author(s):  
Zheng Xiang Wang ◽  
Ji Tong Yuan ◽  
Qi Long Liu ◽  
Xi Mei Xiao ◽  
Yun Hua Li ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Water Resistance ◽  
Waterborne Polyurethane ◽  
Synthesis And Characterization ◽  
Good Adherence ◽  
Water Contact ◽  
Tung Oil ◽  
Low Surface Energy ◽  
Ft Ir

A novel waterborne polyurethane (WPU) modified by tung oil was prepared with 2,4-tolylene diisocyanate, polyethylene glycol, dimethylol propinic acid, 1,4-butanedilo as main materials via acetone process. The structure of WPU molecule was characterized by FT-IR. Adhesive behavior for non-polar and/or low surface energy soft packing films was studied. Water resistance of films were evaluated by water contact angle and water uptake and thermal properties determined by thermal analysis instruments. The results show that the modified WPU films have good water and heat resistance. Both of modified WPUs or not have good adherence on BOPP films.

scholarly journals Pengaruh Penambahan Carboxymethyl Cellulose Terhadap Karakteristik Bioplastik Dari Pati Ubi Nagara (Ipomoea batatas L.)

2019 ◽  
Vol 7 (1) ◽  
pp. 77-85
Author(s):  
Dahlena Ariyani ◽  
Erni Puryati Ningsih ◽  
Sunardi Sunardi
Keyword(s):  
Tensile Strength ◽  
Carboxymethyl Cellulose ◽  
Ipomoea Batatas ◽  
Water Resistance ◽  
Transmission Rate ◽  
Synthesis And Characterization ◽  
Water Vapor Transmission Rate ◽  
Sweet Potatoes ◽  
Water Vapor Transmission

Synthesis and characterization of bioplastics from Nagara sweet potatoes (Ipomoea batatas L) starch with carboxymethyl cellulose (CMC) as a filler has been conducted. The purpose of this study was to evaluate the effects of CMC addition on the characteristic of bioplastics from Nagara sweet potato (Ipomoea batatas L) starch. Bioplastic synthesis was carried out by the melt intercalation method with variations in the amount of CMC 0-30% (w/w). Bioplastics were analyzed using FTIR spectrophotometer, thickness, solubility, water resistance, water vapor transmission rate, tensile strength and elongation. The values of the tensile strength of the bioplastic produced increases with increasing of CMC. The results also showed that the optimum CMC concentration in bioplastics production is 9% (w/w) with a tensile strength value 0.5281 N/mm2.

Disulfide Cross-Linked Hydrogel Scaffold Based on Poly (Amic Acid) with Tunable Degradation

2011 ◽  
Vol 391-392 ◽  
pp. 319-322
Author(s):  
Jiao Xia Sun ◽  
Yuan Liang Wang ◽  
Chang Shun Ruan ◽  
Shu Hua Dou
Keyword(s):  
Tissue Regeneration ◽  
Amic Acid ◽  
Molar Ratio ◽  
Synthesis And Characterization ◽  
Surface Microstructure ◽  
Swelling Ratio ◽  
Hydrogel Scaffold ◽  
Degradation Time

The objective of this work was to create 3D hydrogel with tunable degradability for use in tissue regeneration. Therefore, we reported the synthesis and characterization of a novel degradable hydrogel based on poly (amic acid) (PAA). Unlike previously reported degradable hydrogel, these materials contained two kind of cleavable bonds to adjust their degradation. FTIR was employed to characterize the structure of PAA and hydrogels. Swelling ratio and degradation time correlated with the molar ratio of two cross-linkers and cross-linked density. The surface microstructure of hydrogels during degradation was observed by SEM. These properties changed predictably as degradation.

scholarly journals Pengaruh Penambahan Carboxymethyl Cellulose Terhadap Karakteristik Bioplastik Dari Pati Ubi Nagara (Ipomoea batatas L.)

2019 ◽  
Vol 7 (1) ◽  
pp. 77-85
Author(s):  
Erni Puryati Ningsih ◽  
Dahlena Ariyani ◽  
Sunardi Sunardi
Keyword(s):  
Tensile Strength ◽  
Carboxymethyl Cellulose ◽  
Ipomoea Batatas ◽  
Water Resistance ◽  
Transmission Rate ◽  
Synthesis And Characterization ◽  
Water Vapor Transmission Rate ◽  
Sweet Potatoes ◽  
Water Vapor Transmission

Synthesis and characterization of bioplastics from Nagara sweet potatoes (Ipomoea batatas L) starch with carboxymethyl cellulose (CMC) as a filler has been conducted. The purpose of this study was to evaluate the effects of CMC addition on the characteristic of bioplastics from Nagara sweet potato (Ipomoea batatas L) starch. Bioplastic synthesis was carried out by the melt intercalation method with variations in the amount of CMC 0-30% (w/w). Bioplastics were analyzed using FTIR spectrophotometer, thickness, solubility, water resistance, water vapor transmission rate, tensile strength and elongation. The values of the tensile strength of the bioplastic produced increases with increasing of CMC. The results also showed that the optimum CMC concentration in bioplastics production is 9% (w/w) with a tensile strength value 0.5281 N/mm2.

Synthesis and characterization of 2,2′-bithiophene end-capped dihexyloxy phenylene pentamer and its application in a solution-processed organic ultraviolet photodetector

RSC Advances ◽  
2016 ◽  
Vol 6 (66) ◽  
pp. 61848-61859 ◽  
Author(s):  
Lih Wei Lim ◽  
Chin Hoong Teh ◽  
Rusli Daik ◽  
Norazilawati Muhamad Sarih ◽  
Mohd Asri Mat Teridi ◽  
...  
Keyword(s):  
Organic Material ◽  
Synthesis And Characterization ◽  
Ultraviolet Photodetector ◽  
Uv Photodetector ◽  
Solution Processed ◽  
Solution Processable

A new solution processable small organic material, 2,2′-bithiophene end-capped dihexyloxy phenylene (BHBT2) was synthesized and applied in organic UV photodetector, resulting the device exhibited fast, reversible and stable response upon detection.

scholarly journals Synthesis and Characterization of Cassava Shell Based Biodegradable Plastic with Kitosan Addition

2017 ◽  
Vol 3 (1) ◽  
pp. 198
Author(s):  
Supriyono Supriyono ◽  
Hamdan Hadi Kusuma ◽  
Mulyatun Mulyatun ◽  
Biaunik Niski Kumila
Keyword(s):  
Functional Group ◽  
Mechanical Test ◽  
Decomposition Process ◽  
Biodegradable Plastic ◽  
Synthesis And Characterization ◽  
Plastic Properties ◽  
Organic Functional Group ◽  
Elongation Percentage ◽  
Biodegradability Test

<p style="text-align: justify;">Wasted-plastic which is a hardly-decomposed material was one of the major problems of trash-recycling management in Indonesia. Replacing a common plastic with biodegradable plastic was one of the solution to reduce the amount of undecomposed-materials in the enviroment. Therefore, the aim of this resarch is to study how to synthesis cassava shell based biodegradable plastic and to analyse the effect of kitosan addition on cassava shell based biodegradable plastic properties. There are three basic characterization processes performed to analyse the sample properties, i.e mechanical test, FTIR and biodegradability test. Kitosan enhanced the mechanical and biodegradability properties of samples. The elongation-percentage decreased down to 8,57% along with the increasing the amount of kitosan concentration. FTIR data indicated the presence of O-H, N-H, C-H, C=C, NO2 and C-O organic functional group on biodegradable plastic samples. Kitosan reduce the decomposition process of samples due to its hydrophilicity. Sample with highest concentration of kitosan decomposed at the longest time up to 14 days. . ©2017 JNSMR UIN Walisongo. All rights reserved.</p>

scholarly journals Synthesis and Characterization of Biodegradable Plastic with Basic Materials of “Singkong Onggok” - Pectin Peel of “Jeruk Bali” (Citrus Maxima) – Plasticizer

2019 ◽  
Vol 2 ◽  
pp. 201-205
Author(s):  
Laelatun Maghfiroh ◽  
Kartini Fauziah Hanum ◽  
Endaruji Sedyadi ◽  
Irwan Nugraha ◽  
Fatchul Anam Nurlaili
Keyword(s):  
Tensile Strength ◽  
Extraction Methods ◽  
Biodegradable Plastics ◽  
Biodegradable Plastic ◽  
Synthesis And Characterization ◽  
Citrus Maxima ◽  
Starch Composition ◽  
Biodegradation Test

Biodegradable plastic made from pectin pell of “jeruk bali” has been carried out. Pectin is obtained by extraction methods and for the manufacture of biodegradable plastics with hot-blending methods. The characteristics of the mechanical biodegradable plastics are determined  by  tensile  strength  and  elongation,  and  biodegradation  test  of  biodegradable  plastics.  The  results  of  manufacture biodegradable plastic with the addition of pectin 5g was the best result with a tensile strength value of 195.35 MPa, and an elongation value of around 15.73 - 33.40%. Plastics with the variation of sorbitol starch composition as much as 1.5 g with 1 ml sorbitol each having a tensile strength of 61.29 MPa and elongation value of 14.30%. Plastic with a variation of 1.5 ml sorb itol has a tensile strength value of 118.93 MPa and an elongation value of 16.73%. Plastic with a variation of 2 ml sorbitol has a tensile strength value of 79.67 MPa and an elongation value of 17.63%.

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