Surface modification of natural rubber film by UV-induced graft copolymerization with methyl methacrylate

2007 ◽  
Vol 104 (4) ◽  
pp. 2270-2276 ◽  
Author(s):  
W. Anancharungsuk ◽  
S. Tanpantree ◽  
A. Sruanganurak ◽  
P. Tangboriboonrat
Keyword(s):  
Surface Modification ◽  
Natural Rubber ◽  
Methyl Methacrylate ◽  
Graft Copolymerization ◽  
Rubber Film

Surface modification of natural rubber film by polymerisation of methyl methacrylate in water-based system

2006 ◽  
Vol 42 (10) ◽  
pp. 2334-2342 ◽  
Author(s):  
Kittiporn Sanguansap ◽  
Rattaporn Thonggoom ◽  
Pramuan Tangboriboonrat
Keyword(s):  
Surface Modification ◽  
Natural Rubber ◽  
Methyl Methacrylate ◽  
Water Based ◽  
Rubber Film

Surface Modification of Natural Rubber Film with PMMA Nanoparticles Stabilized by Chitosan or its Derivative

2014 ◽  
Vol 875-877 ◽  
pp. 59-62
Author(s):  
Thanida Arpornwichanop ◽  
Nuttakun Kanjanathaworn ◽  
Pramuan Tangboriboonrat
Keyword(s):  
Surface Roughness ◽  
Antimicrobial Activity ◽  
Surface Modification ◽  
Natural Rubber ◽  
Methyl Methacrylate ◽  
Direct Contact ◽  
Miniemulsion Polymerization ◽  
Surface Friction ◽  
Layer By Layer ◽  
Rubber Film

Poly(methyl methacrylate) (PMMA) latex particles stabilized by chitosan (CS) or N,N,N-trimethylated chitosan (TMC) (50% degree of quaternization) were prepared via the miniemulsion polymerization. The spherical PMMA-CS nanoparticles (342 nm) were then deposited onto sulphur-prevulcanized natural rubber (SPNR) film via the Layer-by-Layer (LbL) technique. The aims were to reduce the surface friction of rubber film and to avoid the direct contact between SPNR and human skin which might cause the allergic problem for some hypersensitive users. Results confirmed the presence of PMMA-CS particles which caused an increase in the surface roughness of SPNR from 46 to 57. However, the PMMA-CS did not exhibit the antimicrobial activity. Therefore, the antimicrobial activity against E.coli and S.aureus of the SPNR film coated with PMMA-TMC particles is investigated.

Graft copolymerization of methyl methacrylate and vinyltriethoxysilane binary monomers onto natural rubber

2021 ◽  
Vol 28 (7) ◽  
Author(s):  
Thuong Nghiem Thi ◽  
Ha Cao Hong ◽  
Yusof Nurul Hayati ◽  
Seiichi Kawahara
Keyword(s):  
Natural Rubber ◽  
Methyl Methacrylate ◽  
Graft Copolymerization

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

scholarly journals Improvement of Thermal and Mechanical Properties of Vietnam Deproteinized Natural Rubber via Graft Copolymerization with Methyl Methacrylate

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Thi Nhan Nguyen ◽  
Hieu Nguyen Duy ◽  
Dung Tran Anh ◽  
Thuong Nghiem Thi ◽  
Thu Ha Nguyen ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Natural Rubber ◽  
Methyl Methacrylate ◽  
Graft Copolymer ◽  
Graft Copolymerization ◽  
Graft Copolymers ◽  
Thermal And Mechanical Properties ◽  
H Nmr ◽  
Tert Butyl Hydroperoxide ◽  
Deproteinized Natural Rubber

In this study, we investigated the improvement of the thermal and mechanical properties of Vietnam deproteinized natural rubber (DPNR) via graft copolymerization of methyl methacrylate (MMA). The graft copolymerization was achieved successfully in latex stage using tert-butyl hydroperoxide (TBHPO) and tetra-ethylenepentamine (TEPA) as radical initiators at 30°C. By grafting with various MMA feeds and initiator concentration of 6.6×10−5 mol/g-rubber, the highest grafting efficiency and conversion were achieved at MMA of 15 wt.% per kg of rubber, 68% and 90%, respectively. The structure of grafted copolymers was characterized by 1H NMR, FTIR-ATR, and GPC, and thermal properties were investigated through DSC and TGA measurements. These showed that graft copolymers were more stable and rigid than DPNR. Storage modulus (G′) of graft copolymer was found to double that of DPNR, which contributed to the formation of graft copolymer. After sulfur vulcanization, the mechanical properties of DPNR-graft-PMMA, such as tensile strength, tear strength, and hardness, were improved significantly. Curing behaviors of the graft copolymers were found to be remarkably better than virgin DPNR.

scholarly journals Graft Copolymerization of Methyl Methacrylate and Vinyltriethoxysilane onto Natural Rubber

2021 ◽  
Vol 31 (4) ◽  
pp. 55-60
Keyword(s):  
Nmr Spectroscopy ◽  
Natural Rubber ◽  
Methyl Methacrylate ◽  
Tensile Property ◽  
Graft Copolymer ◽  
Graft Copolymerization ◽  
Silica Particles ◽  
Grafting Efficiency

Preparation and characterization of natural rubber grafted with methyl methacrylate (MMA) and vinytriethoxysilane (VTES) were performed in the present work. Graft copolymerization of methyl methacryate was carried out in latex stage, and VTES was added during the graft copolymerization of MMA. FTIR and NMR spectroscopy were used to investigate the structure of graft copolymer and determination of conversion and grafting efficiency of MMA. It confirmed that the poly(methyl methacrylate) (PMMA) and silica particles (PVTES) were successfully formed in NR-graft-PMMA-PVTES graft copolymer. Conversions of MMA were about 90-100%; however, MMA grafting efficiency decreased as the MMA concentrations increased. Tensile property of NR-graft-PMMA-PVTES was found to improve compared with that of pure NR.

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