Controlled Synthesis of Nano-Sized Cationic Soap-Free Polystyrene/Poly(methyl methacrylate) Latexes via Reversible Addition-Fragmentation Chain Transfer Mediated Emulsion Copolymerization

2016 ◽  
Vol 8 (6) ◽  
pp. 514-520 ◽  
Author(s):  
Jianxiong Xu ◽  
Chao Tong ◽  
Guo Du ◽  
Weiwei Liu ◽  
Na Li
Keyword(s):  
Methyl Methacrylate ◽  
Chain Transfer ◽  
Controlled Synthesis ◽  
Emulsion Copolymerization ◽  
Poly Methyl Methacrylate ◽  
Reversible Addition

Synthesis of Poly(Methyl Methacrylate)-Based Polyrotaxane via Reversible Addition–Fragmentation Chain Transfer Polymerization

2020 ◽  
Vol 9 (12) ◽  
pp. 1853-1857
Author(s):  
Yu-Cheng Wang ◽  
Rina Maeda ◽  
Gergely Kali ◽  
Hideaki Yokoyama ◽  
Gerhard Wenz ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Chain Transfer ◽  
Poly Methyl Methacrylate ◽  
Reversible Addition ◽  
Chain Transfer Polymerization

scholarly journals The thermal stability of poly(methyl methacrylate) prepared by raft polymerisation

2008 ◽  
Vol 73 (8-9) ◽  
pp. 915-921 ◽  
Author(s):  
Lynne Katsikas ◽  
Milena Avramovic ◽  
Betancourt Cortés ◽  
Milos Milovanovic ◽  
Melina Kalagasidis-Krusic ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Methyl Methacrylate ◽  
Chain Transfer ◽  
Double Bonds ◽  
Poly Methyl Methacrylate ◽  
Reversible Addition ◽  
Raft Agent ◽  
Thermal Stability Of

Poly(methyl methacrylate), PMMA, was prepared by reversible addition-fragmentation chain transfer, RAFT, polymerisation using 2-(2-cyanopropyl)-dithiobenzoate, CPDB, as the RAFT agent. The thermal stability of the resulting polymer approached that of anionically prepared PMMA, as determined by thermogravimetry. This was the consequence of the RAFT prepared polymer having no head-to-head links and no chain end double bonds, which are responsible for the relatively low thermal stability of radically prepared PMMA.

scholarly journals Synthesis of Poly(methyl methacrylate) Grafted Multiwalled Carbon Nanotubes via a Combination of RAFT and Alkyne-Azide Click Reaction

2019 ◽  
Vol 9 (3) ◽  
pp. 603 ◽  
Author(s):  
Wenzhong Ma ◽  
Yuchen Zhao ◽  
Zhiwei Zhu ◽  
Lingxiang Guo ◽  
Zheng Cao ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Chain Transfer ◽  
Click Reaction ◽  
Multiwalled Carbon ◽  
Poly Methyl Methacrylate ◽  
First Order ◽  
Pristine Mwcnts ◽  
First Order Kinetics ◽  
Molecular Weight Dependence ◽  
Reversible Addition

An efficient synthesis route was developed for the preparation of multiwalled carbon nanotube (MWCNT) nanohybrids using azide-terminated poly(methyl methacrylate) (PMMA) via a combination of reversible addition fragmentation chain transfer (RAFT) and the click reaction. A novel azido-functionalized chain transfer agent (DMP-N3) was prepared and subsequently employed to mediate the RAFT polymerizations of methyl methacrylate (MMA). The RAFT polymerizations exhibited first-order kinetics and a linear molecular weight dependence with the conversion. The kinetic results show that the grafting percentage of PMMA on the MWCNTs surface grows along with the increase of the reaction time. Even at 50 °C, the grafting rate of azide-terminated PMMA is comparatively fast in the course of the click reaction, with the alkyne groups adhered to MWCNTs in less than 24 h. The successful functionalization of PMMA onto MWCNT was proved by FTIR, while TGA was employed to calculate the grafting degree of PMMA chains (the highest GP = 21.9%). Compared with the pristine MWCNTs, a thicker diameter of the MWCNTs-g-PMMA was observed by TEM, which confirmed the grafted PMMA chain to the surface of nanotubes. Therefore, the MWCNTs-g-PMMA could be dispersed and stably suspended in water.

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