scholarly journals Maillard Reaction in Natural Rubber Latex: Characterization and Physical Properties of Solid Natural Rubber

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
S. Montha ◽  
P. Suwandittakul ◽  
A. Poonsrisawat ◽  
P. Oungeun ◽  
C. Kongkaew
Keyword(s):  
Natural Rubber ◽  
Physical Properties ◽  
Maillard Reaction ◽  
Polyacrylamide Gel Electrophoresis ◽  
Sodium Dodecylsulfate ◽  
Natural Rubber Latex ◽  
Attenuated Total Reflection ◽  
Cross Linking ◽  
Remarkable Effect ◽  
Protein Cross Linking

Maillard reaction in Natural Rubber (NR) latex was investigated by treating fresh NR latex with glutaraldehyde (C5H8O2) in amounts of 0, 50, 100, and 200 mmol/kg of latex. Protein cross-linking in fresh NR latex and solid NR was confirmed by using sodium dodecylsulfate polyacrylamide gel electrophoresis (SDS-PAGE) and attenuated total reflection infrared (ATR-IR) spectroscopy, respectively. It was found that degree of protein cross-linking in NR increased with increasing C5H8O2concentration. Physical properties of untreated and treated NR substances in terms of gel content, initial Wallace plasticity (P0), plasticity retention index (PRI), Mooney viscosity, and tensile strength were carefully explored. Results clearly showed that the Maillard cross-linking of proteins had remarkable effect on bulk NR properties, that is, solvent resistance, hardness, resistance to oxidation, rheological behavior, and resistance to stretching out.

Elevated Serum Levels of 3-Deoxyglucosone, a Potent Protein-Cross-Linking Intermediate of the Maillard Reaction, in Uremic Patients

Nephron ◽  
1995 ◽  
Vol 69 (4) ◽  
pp. 438-443 ◽  
Author(s):  
Toshimitsu Niwa ◽  
Naohito Takeda ◽  
Takashi Miyazaki ◽  
Hideo Yoshizumi ◽  
Akira Tatematsu ◽  
...  
Keyword(s):  
Maillard Reaction ◽  
Elevated Serum ◽  
Serum Levels ◽  
Cross Linking ◽  
Uremic Patients ◽  
Protein Cross Linking

scholarly journals Physicochemical, Thermomechanical, and Swelling Properties of Radiation Vulcanised Natural Rubber Latex Film: Effect of Diospyros peregrina Fruit Extracts

2013 ◽  
Vol 2013 ◽  
pp. 1-8
Author(s):  
Kazi Md Zakir Hossain ◽  
Nashid Sharif ◽  
N. C. Dafader ◽  
M. E. Haque ◽  
A. M. Sarwaruddin Chowdhury
Keyword(s):  
Natural Rubber ◽  
Natural Rubber Latex ◽  
Tensile Modulus ◽  
Decomposition Temperature ◽  
Latex Film ◽  
Cross Linking ◽  
Rubber Latex ◽  
Swelling Properties ◽  
Fruit Extracts ◽  
Control Film

A range of radiation vulcanised natural rubber latex (RVNRL) films were prepared using various concentrations of aqueous extracts of mature Diospyros peregrina fruit, which acted as a cross-linking agent. The surface of the RVNRL films exhibited an aggregated morphology of the rubber hydrocarbon with increasing roughness due to increasing fruit extract contents in the latex. An improvement in tensile strength, tensile modulus, and storage modulus of RVNRL films was observed with the addition of fruit extracts compared to the control film due to their cross-linking effect. The glass transition (Tg) temperature of all the RVNRL films was found to be at around −61.5°C. The films were also observed to be thermally stable up to 325°C, while the maximum decomposition temperature appeared at around 375°C. The incorporation of fruit extracts further revealed a significant influence on increasing the crystallinity, gel content, and physical cross-link density of the RVNRL films.

Direct evidence for the role of Maillard reaction products in protein cross-linking in milk powder during storage

2013 ◽  
Vol 31 (2) ◽  
pp. 83-91 ◽  
Author(s):  
Thao T. Le ◽  
John W. Holland ◽  
Bhesh Bhandari ◽  
Paul F. Alewood ◽  
Hilton C. Deeth
Keyword(s):  
Maillard Reaction ◽  
Direct Evidence ◽  
Milk Powder ◽  
Cross Linking ◽  
Maillard Reaction Products ◽  
Reaction Products ◽  
Protein Cross Linking

scholarly journals Protein Cross-linking by the Maillard Reaction

1996 ◽  
Vol 271 (32) ◽  
pp. 19338-19345 ◽  
Author(s):  
Ramanakoppa H. Nagaraj ◽  
Irina N. Shipanova ◽  
Frederick M. Faust
Keyword(s):  
Maillard Reaction ◽  
Cross Linking ◽  
Protein Cross Linking

Maillard reaction in natural rubber latex: Improvement of concentration process

2017 ◽  
Vol 134 (34) ◽  
pp. 45224
Author(s):  
Chaveewan Kongkaew ◽  
Aphisit Poonsrisawat ◽  
Verawat Champreda ◽  
Surapich Loykulnant
Keyword(s):  
Natural Rubber ◽  
Maillard Reaction ◽  
Natural Rubber Latex ◽  
Rubber Latex ◽  
Concentration Process

Natural rubber latex foam production using air microbubbles: Microstructure and physical properties

2020 ◽  
Vol 260 ◽  
pp. 126916 ◽  
Author(s):  
Sanit Sirikulchaikij ◽  
Rungrote Kokoo ◽  
Matthana Khangkhamano
Keyword(s):  
Natural Rubber ◽  
Physical Properties ◽  
Natural Rubber Latex ◽  
Rubber Latex ◽  
Foam Production

scholarly journals Pengaruh Konsentrasi Asam Sulfat (H2SO4) pada Hidrolisa Tongkol Jagung (Zea mays) Menjadi Nanokristal Selulosa sebagai Filler Penguat pada Produk Lateks Karet Alam

2019 ◽  
Vol 8 (2) ◽  
pp. 48-53
Author(s):  
Hamidah Harahap ◽  
Azwin Harfansah Nst ◽  
Ilhamdi Fujian Junaidi
Keyword(s):  
Sulfuric Acid ◽  
Natural Rubber ◽  
Physical Properties ◽  
Mechanical Test ◽  
Natural Rubber Latex ◽  
Spherical Shape ◽  
Rubber Latex ◽  
Hydrolysis Process ◽  
Cross Connect ◽  
Vulcanization Process

This research studied about the effect of concentrations sulfuric acid (H2SO4) on the hydrolysis process of corn cobs waste to manufacture of cellulose nanocrystal (NCC) which will be applied as fillers in natural rubber latex. This study began with a pre-vulcanization process of natural rubber latex at a temperature of 70 oC and followed by a vulcanization process at 110 oC for 10 minutes. The results of the testing of physical properties indicate that the higher amount of NCC loading will result in higher crosslinked denotes, while the results of testing the mechanical properties indicate that the maximum value is achieved at the loading of NCCs as much as 6 phr. The mechanical test results supported by the analysis of Scanning Electron Microscopy (SEM) showing the NCC have spread well. Characterization of the Transform Electron Microscope (TEM) shown  the resulting of NCC was spherical shape with the size of NCC produced for each concentration of sulfuric acid (H2SO4) 45%, 55%, and 65% respectively 57.65 nm; 28.43 nm; and 82.61 nm with an amount of each 0.849 g; 1,824 g; and 0.681 g. The mechanical and physical properties of the optimum natural rubber latex products occurred in the loading of nanocrystal cellulose with a number of 6 bsk, where the values ​​of cross-connect density, tensile strength, elongation at break, M200 and M300 were respectively 10.6234 2Mc-1x10- 5; 18.2 MPa; 780%; 2.23 MPa and 2.7 MPa.

scholarly journals Protein cross-linking and the Maillard reaction decrease the solubility of milk protein concentrates

2018 ◽  
Vol 6 (5) ◽  
pp. 1196-1203 ◽  
Author(s):  
Fengjiao Fan ◽  
Meng Liu ◽  
Pujie Shi ◽  
Xianbing Xu ◽  
Weihong Lu ◽  
...  
Keyword(s):  
Maillard Reaction ◽  
Milk Protein ◽  
Cross Linking ◽  
Protein Concentrates ◽  
Protein Cross Linking

MECHANICAL PROPERTIES AND CURE TEST OF A NATURAL RUBBER/POLY(VINYL ALCOHOL) BLEND

2012 ◽  
Vol 85 (1) ◽  
pp. 147-156 ◽  
Author(s):  
Sa-Ad Riyajan ◽  
Suwit Chaiponban ◽  
Sasitorn Chusri ◽  
Supayang Piyawan Voravuthikunchai
Keyword(s):  
Tensile Strength ◽  
Antibacterial Activity ◽  
Natural Rubber ◽  
Polymer Blend ◽  
Maleic Acid ◽  
Acid Content ◽  
Attenuated Total Reflection ◽  
Curing Temperature ◽  
Cross Linking ◽  
Curing Time

Abstract Properties and antibacterial activity of polymer blend films prepared from polyvinyl alcohol (PVA) and natural rubber (NR) blends, in the presence of maleic acid as a cross-linking agent were studied. The effect of the maleic acid content, curing temperature, and curing time on the properties of the polymer blend was investigated. Cross-linking between PVA and maleic acid was observed by attenuated total reflection mode–Fourier transform infrared spectroscopy at 1152 cm−1. The swelling ratio of the polymer blend decreased as a function of the increase of the maleic acid content. The tensile strength of the polymer blend increased with an increase of both the maleic acid and the curing time. The highest tensile strength of the samples was observed with 40% w/w maleic acid after a 24 h curing time at 120 °C. The elongation at the break of 60/40 NR/PVA was ∼500% at 120 °C for 1 h. In addition, the polymer blend showed good antibacterial activity with Staphylococcus aureus ATCC25923, Escherichia coli ATCC25922, and Acinetobacter baumannii JVC 1053 and could find many applications.

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