Preparation of Jasmine Microcapsules and Aroma Finishing of Cotton Fabrics by UV-Curing

2011 ◽  
Vol 331 ◽  
pp. 306-309 ◽  
Author(s):  
Ning Xu ◽  
Dan Yu ◽  
Wei Wang
Keyword(s):  
Particle Size ◽  
Fourier Transform ◽  
In Situ Polymerization ◽  
Uv Curing ◽  
Cotton Fabrics ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Finishing Process ◽  
Curing Method

In this paper, jasmine microcapsule was synthesized by in-situ polymerization and was applied on cotton fabric with UV curing method. The jasmine microcapsule was verified by Fourier transform infrared spectroscopy. Size distribution was evaluated using particle size analysis. The finishing durability was studied by human olfactory sensations and an optimal finishing process was determined. The results suggest that UV curing will be promising for use in aroma finishing.

scholarly journals KARAKTERISASI FISIKOKIMIA DAN AKTIVITAS ANTIOKSIDAN SERAT PANGAN DARI AMPAS EMPULUR SAGU BARUK (Arenga Microcarpha B.)

2020 ◽  
Vol 13 (1) ◽  
Author(s):  
Nova . ◽  
Edi Suryanto ◽  
Lidya I. Momuat
Keyword(s):  
Antioxidant Activity ◽  
Particle Size ◽  
Fourier Transform ◽  
Dietary Fiber ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
X Ray ◽  
Insoluble Dietary Fiber ◽  
Infra Red ◽  
Ft Ir

Telah dilakukan pengujian potensi aktivitas antioksidan serat pangan dari ampas empulur sagu baruk. Penelitian ini bertujuan untuk mengetahui potensi antioksidan dari ampas empulur sagu baruk. Hasil penelitian menunjukkan bahwa ampas empulur sagu baruk tidak mengalami perubahan mendasar pada komponen utama selama penggilingan ditunjukkan pada hasil spektra Fourier Transform Infra Red (FT-IR). Hasil analisis Particle Size Analysis (PSA) menunjukkan ukuran partikel dari ampas empulur sagu baruk sebesar 92,89 µm. Analisis X-ray Difraction (XRD) menunjukkan adanya karakteristik dari selulosa yang merupakan bagian dari serat pangan tak larut. Hasil pengujian serat pangan didapatkan bahwa ampas empulur sagu baruk memiliki serat pangan total sebesar 68,71% yang meliputi 66,58% serat pangan tak larut dan 2,12% serat pangan larut. Kadar serat pangan tak larut meliputi kadar selulosa, hemiselulosa dan lignin yaitu 50,7%; 29,16%; dan 11,67% secara berturut-turut. Hasil pengujian aktivitas antioksidan metode DPPH dari ekstrak fenolik terikat (EFT) dan fenolik bebas (EFB) ampas empulur sagu baruk menunjukkan aktivitas antioksidan sebesar 66,20% EFB dan 50,97% EFT. Adapun kemampuan penangkal ion nitrit dari sampel ampas sagu baruk kering angin memiliki potensi menangkal ion nitrit sebesar 55,20% EFB dan 50,15% EFT.ABSTRACT Potential antioxidant activity of food fiber from barley sago pith pulp has been tested. This research studies the antioxidant potential of barley sago pith pulp. Fourier Transform Infra Red (FT-IR). The results showed the fact that the barley sago pith pulp did not change the basis of the main components during grinding evaluating the spectral results. The results of the analysis of Particle Size Analysis (PSA) showed that the particle size of the pith sago waste was 92.89 μm. X-ray Difraction (XRD) analysis shows the characteristics of cellulose which is part of insoluble dietary fiber. Food fiber test results were obtained from barley sago pith pulp having a total food fiber of 68.71% which contained 66.58% insoluble food fiber and 2.12% soluble food fiber. Insoluble dietary fiber content includes cellulose, hemicellulose and lignin levels that is 50.7%; 29.16%; and 11.67% consistently. The results of testing the antioxidant activity of DPPH method from phenolic extracts (EFT) and free phenolic (EFB) barley pith pulp showed antioxidant activity of 66.20% EFB and 50.97% EFT. Whereas the ability to prevent nitrite ions from dried barago sago pulp samples has the ability to counteract nitrite ions by 55.20% EFB and 50.15% EFT.

scholarly journals SYNTHESIS OF NiO/ZnO NANOCOMPOSITES IN ETHYLENE GLYCOL

2020 ◽  
Author(s):  
Bakhtawar Sajjad ◽  
Umer Ali ◽  
Auswa Nadeem ◽  
Lubna Noor ◽  
Muhammad Akhyar Farrukh
Keyword(s):  
Differential Scanning Calorimetry ◽  
Particle Size ◽  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Thermogravimetric Analysis ◽  
Ethylene Glycol ◽  
Sol Gel ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Scanning Calorimetry

Ethylene glycol is solvent used in sol-gel method to synthesize NiO/ZnO nanocomposites. ZnCl2 along with NiCl2.6H2O were used as precursors during synthetization of NiO/ZnO nanocomposites. We used various techniques such as Thermogravimetric Analysis (TGA), Differential Scanning Calorimetry (DSC), Fourier Transform Infrared Spectroscopy (FTIR) and particle size analysis for synthesis of the nanocomposites which confirm that these nanocomposites act as catalyst.

Microencapsulation of diglycidyl 1,2-cyclohexanedicarboxylate by in situ polymerization: preparation and characterization

e-Polymers ◽  
2015 ◽  
Vol 15 (6) ◽  
pp. 377-383 ◽  
Author(s):  
Hai-Ping Wang ◽  
Meng-Qiang Li ◽  
Chang Guo ◽  
Si-Qian Hu
Keyword(s):  
In Situ Polymerization ◽  
Urea Formaldehyde ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Shell Material ◽  
The Core ◽  
The Mean ◽  
Decomposition Behavior ◽  
Shell Wall Thickness

AbstractMicrocapsules containing a glycidyl ester-type epoxy resin were successfully synthesized by in situ polymerization, with poly(melamine-urea-formaldehyde) as the shell material and diglycidyl 1,2-cyclohexanedicarboxylate (DGCHD) as the core substance. Scanning electron microscopy was performed to investigate the surface morphology and shell wall thickness of the microcapsule. The fabrication, diameters and thermal decomposition behavior of the resultant microcapsules were studied by means of Fourier transform infrared spectroscopy, laser particle size analysis, and thermogravimetric analysis (TGA), respectively. Results indicated that the highest loading of DGCHD in the as-prepared microcapsules was about 89.1 wt.% and that the mean diameter of the capsules was in the range of 50–130 μm, which can be adjusted by changing the feeding mass ratio of the core/shell material and emulsifying rate, respectively. TGA results showed that the microencapsulated DGCHD degraded in two distinguishable stages.

scholarly journals KARAKTERISASI DAN AKTIVITAS ANTIOKSIDAN SERAT PANGAN DARI DAGING BUAH PALA (MYRISTICA FRAGRANS Houtt)

2020 ◽  
Vol 13 (1) ◽  
Author(s):  
Christina Tang Dareda ◽  
Edi Suryanto ◽  
Lidya I. Momuat
Keyword(s):  
Antioxidant Activity ◽  
Particle Size ◽  
Fourier Transform ◽  
Chemical Characterization ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
X Ray ◽  
Infra Red ◽  
Ft Ir ◽  
Phenolic Extract

Tujuan dari penelitian ini untuk mengetahui karakteristik fisikokimia dan potensi antioksidan serat pangan dari daging buah pala. Parameter yang digunakan adalah komposisi proksimat, serat pangan, kandungan hemiselulosa, selulosa, lignin, karakteristik gugus fungsi, aktivitas antioksidan, dan kapasitas penangkal nitrit. Hasil  karakteristik  secara  fisik  dengan analisis  Fourier Transform Infra Red (FT-IR) menunjukkan  adanya  daerah serapan gugus –OH, -CH, -CH2, C-O-C yang merupakan identifikasi adanya selulosa pada sampel. Hasil analisis Particle Size Analysis (PSA) menunjukkan ukuran partikel dari daging buah pala 137.08 µm. Analisis X-ray Difraction (XRD) menunjukkan adanya karakteristik dari selulosa dari sampel daging buah pala. Hasil karakterisasi secara kimia menunjukkan komposisi kimia dari daging buah pala seperti air (9.11%), abu (3.43%), lemak (1.81%), protein (4.04%), serat kasar (17.57%), serat pangan tak larut (48.61%), serat pangan terlarut (1.67%), serat pangan total (50.28%), hemiselulosa (10.72%), selulosa (15.66%) dan lignin (19.09%). Hasil pengujian aktivitas antioksidan menunjukkan bahwa ekstrak fenolik bebas daging buah pala lebih besar dibandingkan dengan ekstrak fenolik terikat daging buah pala dan aktivitas penangkal nitrit dari daging buah pala menunjukkan bahwa ekstrak fenolik bebas daging buah pala lebih besar dibandingkan dengan ekstrak fenolik terikat daging buah pala.ABSTRACT The purpose of this study was to determine the physicochemical characteristics and antioxidant potential of food fiber from nutmeg meat. The parameters used are proximate composition, dietary fiber, hemicellulose content, cellulose, lignin, functional group characteristics, antioxidant activity, and nitrite repellent capacity. The results of physical characteristics with Fourier Transform Infra Red (FT-IR) analysis showed the absorption area of the -OH, -CH, -CH2, C-O-C groups which was an identification of cellulose in the sample. The results of the Particle Size Analysis (PSA) show the particle size of the nutmeg flesh 137.08 µm. X-ray Difraction (XRD) analysis showed the characteristics of cellulose from nutmeg meat samples. Chemical characterization results showed the chemical composition of nutmeg meat such as water (9.11%), ash (3.43%), fat (1.81%), protein (4.04%), crude fiber (17.57%), insoluble food fiber (48.61% ), dissolved food fiber (1.67%), total food fiber (50.28%), hemicellulose (10.72%), cellulose (15.66%) and lignin (19.09%). The results of antioxidant activity testing showed that the extract of phenolic-free nutmeg was greater than the phenolic extract bound to nutmeg meat and the nitrite-antidote activity of nutmeg showed that the phenolic extract of nutmeg-free flesh was greater than that of phenolic extract bound to nutmeg meat. 

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