Synthesis of Microcrystalline Cellulose Grafting Poly (methyl methacrylate) Copolymers by ATRP in 1-Allyl-3-Methylimidazolium Chloride

2012 ◽  
Vol 621 ◽  
pp. 157-161 ◽  
Author(s):  
Er Jun Tang ◽  
Miao Yuan ◽  
Liang Li ◽  
Feng Bian ◽  
Di Shun Zhao
Keyword(s):  
Molecular Weight ◽  
Ionic Liquid ◽  
Methyl Methacrylate ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
1H Nmr ◽  
Microcrystalline Cellulose ◽  
Methacrylate Copolymers ◽  
Covalently Bonded ◽  
Ft Ir

The microcrystalline cellulose grafting polymethylmethacrylate (MCC-g-PMMA) copolymer was successfully synthesized by atom transfer radical polymerization (ATRP) using ethanediamine as ligand in Ionic liquid 1-allyl-3-methylimidazolium chloride ([AMIM]Cl). The MCC-g-PMMA was characterized by FT-IR, 1H NMR, SEM and GPC spectroscopies. The results confirmed that the PMMA had been covalently bonded to cellulose backbone. The molecular weight of graft copolymers linearly increased during the polymerization and presented a low polydispersity.

The Study on the Reverse Atom Transfer Radical Polymerization of MMA Catalyzed by Acetylacetonate Cobolt(II) Complex Supported by Ionic Liquid

2012 ◽  
Vol 476-478 ◽  
pp. 2188-2192
Author(s):  
Jian Cai ◽  
Tao Chen ◽  
Guo Zhen Wang ◽  
Jie Gao ◽  
Rui Ma ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Methyl Methacrylate ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
1H Nmr ◽  
Chemical Structure ◽  
Kinetic Studies ◽  
Catalyst System ◽  
Polymerization Process ◽  
Ft Ir

An ionic liquid supported catalytic system, chloromethylimidazole acetylacetonate Cobolt(Ⅱ) was successfully used in the RATRP of methyl methacrylate. The chemical structure of obtained PMMA was confirmed by FT-IR and 1H NMR. The polymerization process in the presence of ionic liquid was thoroughly investigated. The results revealed that this kind of initiator and catalyst system could promote RATRP of MMA with the desired characteristics, and the RATRP proceeded in a controlled manner as evidenced by kinetic studies.

Synthesis of acrylic hot-melt adhesive based on poly(methyl methacrylate)-b-poly(2-ethylhexyl acrylate) copolymer using atom transfer radical polymerization for a nylon fabric bonding system

2019 ◽  
Vol 89 (23-24) ◽  
pp. 5177-5186
Author(s):  
Chung-Feng Jeffrey Kuo ◽  
Jiong-Bo Chen ◽  
Po-Yen Chen ◽  
Garuda Raka Satria Dewangga
Keyword(s):  
Molecular Weight ◽  
Block Copolymer ◽  
Methyl Methacrylate ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Atom Transfer ◽  
Poly Methyl Methacrylate ◽  
Bonding System ◽  
Nylon Fabric ◽  
Hot Melt

Adhesives, such as hot-melt adhesives (HMAs), are widely used in the textile industry for bonding layers of materials and have replaced traditional sewing methods. The block copolymer is a common type of HMA that provides excellent physical features and mechanical properties compared with others. Acrylate-based monomers, methyl methacrylate (MMA), and 2-ethylhexyl acrylate (2-EHA) were used as ingredients to form a linear block copolymer using atom transfer radical polymerization. MMA provides excellent cohesive strength, while 2-EHA provides good adhesion properties. An end-brominated poly(methyl methacrylate) (PMMA-Br) macroinitiator was synthesized from a MMA monomer and initiator, with the best composition obtained by the addition of a 0.6 mol initiator. The macroinitiator had the lowest molecular weight with highest conversion (97%). The addition of a 0.3 mol macroinitiator showed the lowest molecular weight with the highest conversion of acrylic copolymer PMMA- b-poly(2-ethylhexyl acrylate) (PEHA). The glass transition temperature increased with the addition of the macroinitiator concentration, from −43.7℃ to −37.6℃. The thermal stability was reduced with the addition of macroinitiator content, from 332.37℃ to 286.81℃. The shear strength and peel strength of the PMMA- b-PEHA HMAs on nylon fabrics were enhanced from 11.24 to 16.92 kg cm−2 and from 0.29 to 0.61 kg cm−1, respectively, and did not change significantly after being washed 50 times and then kept in low-temperature storage, with the addition of the macroinitiator concentration. The block copolymer PMMA- b-PEHA prepared in this study could be used as a HMA for nylon fabric bonding systems.

Atom transfer radical polymerization of methyl methacrylate in a novel ionic liquid and recycling of the catalyst

2008 ◽  
Vol 108 (6) ◽  
pp. 3683-3689 ◽  
Author(s):  
Guilin Xiao ◽  
Haibo Zhang ◽  
Xinlin Hong ◽  
Gaoyong Zhang ◽  
Xiaohai Zhou ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Methyl Methacrylate ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Atom Transfer
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