Effect of nano cadmium sulfide on combustion and thermal decomposition of polystryene and poly(methyl methacrylate)

2014 ◽  
Vol 25 (4) ◽  
pp. 380-387 ◽  
Author(s):  
Zhengzhou Wang ◽  
Guipeng Cai ◽  
Zvonimir Matusinovic ◽  
Charles A. Wilkie
Keyword(s):  
Thermal Decomposition ◽  
Methyl Methacrylate ◽  
Cadmium Sulfide ◽  
Poly Methyl Methacrylate

Synthesis and thermal decomposition kinetics of poly(methyl methacrylate)-b-poly(styrene) block copolymers

2015 ◽  
Vol 30 (5) ◽  
pp. 691-706 ◽  
Author(s):  
Xinghua Guan ◽  
Xiaoyan Ma ◽  
Hualong Zhou ◽  
Fang Chen ◽  
Zhiguang Li
Keyword(s):  
Thermal Stability ◽  
Thermal Decomposition ◽  
Weight Loss ◽  
Block Copolymers ◽  
Methyl Methacrylate ◽  
Terminal Group ◽  
Loss Ratio ◽  
Poly Methyl Methacrylate ◽  
Second Stage ◽  
Weight Loss Ratio

Two diblock copolymers of poly(methyl methacrylate)- block-poly(styrene) with chlorine as terminal group (PMMA- b-PS-Cl) were synthesized via two-step atom transfer radical polymerization. The structures of the block copolymers were characterized by Fourier transform infrared spectroscopy, proton nuclear magnetic resonance, and gel permeation chromatography. Thermal properties including glass transition temperature ( Tg) and thermal stability were studied by differential scanning calorimetry and thermogravimetric analysis (TGA), respectively. The block copolymers of PMMA- b-PS-Cl exhibited two glass transitions, which were attributed to the Tgs of PMMA and PS segments, respectively. According to TGA, thermal decompositions of PMMA macro-initiator and PMMA- b-PS-Cl block copolymers had two stages. The weight loss ratio in the second stage was more significant than that in the first stage, which may be attributed to the separation of the halogen atom from the terminal group and the formation of a double bond. The breaking down of the backbone dominates in the second stage in which the weight loss ratio was more than 70%, represented the main stage of pyrolysis. It was found that the introduction of the PS chain remarkably enhanced the thermal stability of the copolymer, thus endowing the block copolymers high activation energy for thermal decomposition. On the other hand, the remaining two pyrolysis procedures further indicated that thermodynamic mechanism didn’t change due to the introduction of PS segments.

Thermal decomposition study of poly(methyl methacrylate)/carbon nanofiller composites

2010 ◽  
Vol 22 (1) ◽  
pp. 84-89 ◽  
Author(s):  
A.O. Pozdnyakov ◽  
U.A. Handge ◽  
A. Konchits ◽  
V. Altstädt
Keyword(s):  
Thermal Decomposition ◽  
Methyl Methacrylate ◽  
Poly Methyl Methacrylate ◽  
Carbon Nanofiller

Preparation of cadmium sulfide/poly(methyl methacrylate) composites by precipitation with compressed CO2

2004 ◽  
Vol 94 (4) ◽  
pp. 1643-1648 ◽  
Author(s):  
Zhonghao Li ◽  
Jianling Zhang ◽  
Jimin Du ◽  
Tiancheng Mu ◽  
Zhimin Liu ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Cadmium Sulfide ◽  
Poly Methyl Methacrylate

A reactive molecular dynamics model of thermal decomposition in polymers: I. Poly(methyl methacrylate)

Polymer ◽  
2003 ◽  
Vol 44 (3) ◽  
pp. 883-894 ◽  
Author(s):  
Stanislav I. Stoliarov ◽  
Phillip R. Westmoreland ◽  
Marc R. Nyden ◽  
Glenn P. Forney
Keyword(s):  
Molecular Dynamics ◽  
Thermal Decomposition ◽  
Methyl Methacrylate ◽  
Dynamics Model ◽  
Poly Methyl Methacrylate ◽  
Reactive Molecular Dynamics
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