Compatibility study of chlorinated polyethylene/ethylene methacrylate copolymer blends using thermal, mechanical, and chemical analysis

2013 ◽  
Vol 131 (11) ◽  
pp. n/a-n/a ◽  
Author(s):  
Purabi Bhagabati ◽  
T. K. Chaki
Keyword(s):  
Chemical Analysis ◽  
Compatibility Study ◽  
Chlorinated Polyethylene ◽  
Copolymer Blends ◽  
Methacrylate Copolymer

A Study of the Crystallization Behaviour of Dynamically Vulcanized EPDM/Nylon Copolymer Blends

2003 ◽  
Vol 11 (6) ◽  
pp. 449-463
Author(s):  
Xin Liu ◽  
Hua Huang ◽  
Yong Zhang ◽  
Yinxi Zhang
Keyword(s):  
Crystallization Process ◽  
Nucleating Agent ◽  
Avrami Equation ◽  
Relative Crystallinity ◽  
Epdm Rubber ◽  
Chlorinated Polyethylene ◽  
Copolymer Blends ◽  
Dispersed Particles ◽  
Kinetics Of ◽  
Diene Rubber

In this work the crystallization kinetics of polyamide copolymer (PA) in PA/ ethylene-propylene-diene rubber (EPDM) thermoplastic vulcanizates was studied under non-isothermal and isothermal conditions from the melt. A differential scanning calorimeter was used to monitor the energetics of the crystallization process. The effects of rubber, compatibilizer, vulcanizing agents, and the process methods on the isothermal and non-isothermal crystallization of PA were investigated. Relative crystallinity develops in accordance with the time dependence described by the Avrami equation with the exponent n ≈ 3. The experimental results show that the EPDM rubber is not the nucleating agent in those samples that were not dynamically vulcanized. The addition of chlorinated polyethylene has no effect on the crystallization of PA. But in dynamically vulcanized samples the EPDM rubber is a nucleating agent and the addition of chlorinated polyethylene helps the EPDM to form fine and well-dispersed particles and improves the crystallization of PA.

Preparation and Characterization of Poly(Lactic Acid)/Ethylene Glycidyl Methacrylate Copolymer Blends

2010 ◽  
Vol 150-151 ◽  
pp. 139-143
Author(s):  
Chi Hui Tsou ◽  
Ya Ming Li ◽  
Wei Hua Yao ◽  
Jen Taut Yeh
Keyword(s):  
Reactive Extrusion ◽  
Poly Lactic Acid ◽  
Shear Rates ◽  
Copolymer Blends ◽  
Blown Film ◽  
Ft Ir ◽  
Ir Analysis ◽  
Methacrylate Copolymer ◽  
Epoxy Groups

Both tensile and tear strength values of PLAxEGMCy blown-film specimens in machine and transverse directions improve significantly and reach the maximum values as their EGMC contents approach an optimum value of 6 wt%. The melt shear viscosity values of PLAxEGMCy resins measured at varying shear rates are significantly higher than those of the PLA resin and increase consistently with their EGMC contents. FT-IR analysis suggest that the carboxylic acid groups of PLA molecules react with the epoxy groups of EGMC molecules during the reactive-extrusion processes of PLAxEGMCy specimens. Further DMA and morphological analysis of PLAxEGMCy specimens reveal that EGMC molecules are phase-separated with PLA molecules at EGMC contents equal to or more than 2 wt%, since distinguished phase-separated EGMC droplets and tanδ transitions were found on fracture surfaces and tanδ curves of PLAxEGMCy specimens, respectively. Possible reasons accounting for the above interesting properties of the PLA/EGMC specimens are proposed in this study.

UV-enhanced Ordering in Azobenzene-Containing Polystyrene-block-Poly(n-Butyl Methacrylate) Copolymer Blends

2011 ◽  
Vol 44 (2) ◽  
pp. 278-285 ◽  
Author(s):  
Wei Chen ◽  
Jia-Yu Wang ◽  
Xinyu Wei ◽  
Ji Xu ◽  
Anna C. Balazs ◽  
...  
Keyword(s):  
Butyl Methacrylate ◽  
Copolymer Blends ◽  
Methacrylate Copolymer
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