Radiation Graft Copolymerization of a Mixture of Styrene and n-Butyl Acrylate on Natural Rubber Latex

1987 ◽  
Vol 24 (11) ◽  
pp. 1369-1380 ◽  
Author(s):  
F. Sundardi ◽  
Arliz Zubir ◽  
Yanti Sabarinah ◽  
W. Sofiarti
Keyword(s):  
Natural Rubber ◽  
Butyl Acrylate ◽  
Graft Copolymerization ◽  
Natural Rubber Latex ◽  
Rubber Latex

Surface modification of natural rubber latex films by graft copolymerization

2000 ◽  
Vol 36 (7) ◽  
pp. 1323-1331 ◽  
Author(s):  
Peng Wang ◽  
K.L Tan ◽  
C.C Ho ◽  
M.C Khew ◽  
E.T Kang
Keyword(s):  
Surface Modification ◽  
Natural Rubber ◽  
Graft Copolymerization ◽  
Natural Rubber Latex ◽  
Latex Films ◽  
Rubber Latex

Preparation, Adhesive Performance and Stability of Natural Rubber Latex Grafted with N-Butyl Acrylate (BA) and Methyl Methacrylate (MMA)

2008 ◽  
Vol 47-50 ◽  
pp. 1149-1152 ◽  
Author(s):  
Pranee Chumsamrong ◽  
Jakkarin Mondobyai
Keyword(s):  
Shear Strength ◽  
Natural Rubber ◽  
Methyl Methacrylate ◽  
Butyl Acrylate ◽  
Natural Rubber Latex ◽  
Peel Strength ◽  
Rubber Latex ◽  
Weight Percentage ◽  
Monomer Ratio ◽  
Lap Shear

In order to study the potential of increasing the weather stability of natural rubber latex for use as a water-based contact adhesive, the natural rubber latex was modified by graft copolymerization with n-butyl acrylate (BA) and methyl methacrylate (MMA). The grafting reaction was carried out using emulsion polymerization at 60°C. Potassium persulfate was used to initiate polymerization. Four different weight percentage ratios of BA to MMA used in this work were 80:20, 70:30, 60:40 and 50:50. Percentage conversion of the monomer of all latexes prepared was ≥ 79.8 %. The grafting efficiency of grafted natural rubber latexes with a different monomer ratio tended to decrease with an increase of MMA. The adhesion property was characterized by 90° peel strength and 180° lap shear tests. The shear strength value of grafted natural rubber latexes increased with an increase of MMA content. The grafted latex with the monomer ratio of 50:50 possessed higher shear strength than natural rubber latex. The peel strength value of grafted natural rubber latexes seemed to lower than that of natural rubber latex. The weather stability of the modified latex was characterized using thermogravimetric analysis (TGA) and also the peel samples were left in the open air for 45 days before testing. The results showed that grafted natural rubber latex had a higher weather stability than natural rubber latex.

scholarly journals Grafting of n-butyl acrylate with natural rubber latex film by gamma radiation: a reaction mechanism

1970 ◽  
Vol 5 (1) ◽  
pp. 81-88 ◽  
Author(s):  
KMZ Hossain ◽  
AM Sarwaruddin Chowdhury
Keyword(s):  
Reaction Mechanism ◽  
Natural Rubber ◽  
Butyl Acrylate ◽  
Natural Rubber Latex ◽  
Latex Film ◽  
Cross Linking ◽  
Swelling Ratio ◽  
Cross Link ◽  
Rubber Latex ◽  
The Cross

Natural rubber latex (NRL) and n-butyl acrylate (n-BA) were blended and irradiated at various absorbed doses by gamma rays from Co-60 source at room temperature. The stabilizing effect was determined by measuring the pH and viscosity of NRL with n-BA with the storage time of five weeks. The cross-link density, swelling ratio of the radiation vulcanized rubber film were measured. The cross-link density of the n-BA grafted NRL film was found increasing and the swelling ratio of that film decreasing with the increased absorbed dose. The optimum radiation dose for better cross-linking of natural rubber latex blended with five parts per hundred rubber (phr) n-BA was found 15 kGy absorbed dose. Based on the cross-linking properties a probable cross-linking reaction mechanism for the n-BA grafted natural rubber latex film was developed. Keywords: Natural rubber latex, n-butyl acrylate, Irradiation, Swelling ratio, Cross-link, Reaction mechanism. DOI: 10.3329/diujst.v5i1.4386 Daffodil International University Journal of Science and Technology Vol.5(1) 2010 pp.81-88

Modification of Natural Rubber Latex by Graft Copolymerization of 2-Ethylhexyl Acrylate and Methacrylic Acid

2020 ◽  
Vol 26 (4) ◽  
pp. 314-323
Author(s):  
Xueyuan Wang ◽  
Fanglian Yao ◽  
Jie Su ◽  
Xin Zhang ◽  
Xiaolei Tong ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Methacrylic Acid ◽  
Graft Copolymerization ◽  
Natural Rubber Latex ◽  
Rubber Latex

scholarly journals PARAMETERS INTERACTION OF RADIATION VULCANIZED NATURAL RUBBER LATEX (RVNRL) SENSITIZED BY N-BUTYL ACRYLATE

2007 ◽  
Vol 08 (4) ◽  
pp. 22-30
Author(s):  
Hugo CHIRINOS
Keyword(s):  
Response Surface Methodology ◽  
Natural Rubber ◽  
Response Surface ◽  
Process Parameters ◽  
Gamma Rays ◽  
Butyl Acrylate ◽  
Natural Rubber Latex ◽  
High Concentration ◽  
Mathematical Relationship ◽  
Rubber Latex

Response surface methodology was utilized to conceive a mathematical relationship between the crosslinking efficiency of natural rubber latex vulcanized by gamma rays, and the process parameters (n-butyl acrylate and KOH). The radiation vulcanization of latex can be optimized at low vulcanization dose (VD) and at high concentration of n-BA. This relationship can be estimated by the following model. See on the magazine.

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