Blends of polycarbonate with poly(methyl methacrylate): Miscibility, phase continuity, and interfacial adhesion

1992 ◽  
Vol 32 (13) ◽  
pp. 886-893 ◽  
Author(s):  
Jan Kolarik ◽  
Frantisek Lednicky ◽  
Bela Pukanszky ◽  
Mario Pegoraro
Keyword(s):  
Methyl Methacrylate ◽  
Interfacial Adhesion ◽  
Poly Methyl Methacrylate

scholarly journals Reinforcement of Natural Rubber with Core-Shell Structure Silica-Poly(Methyl Methacrylate) Nanoparticles

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Qinghuang Wang ◽  
Yongyue Luo ◽  
Chunfang Feng ◽  
Zhifeng Yi ◽  
Quanfang Qiu ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Methyl Methacrylate ◽  
Shell Structure ◽  
Interfacial Adhesion ◽  
Core Shell ◽  
Poly Methyl Methacrylate ◽  
Core Shell Structure ◽  
The Fourier Transform ◽  
Latex Compounding

A highly performing natural rubber/silica (NR/SiO2) nanocomposite with a SiO2loading of 2 wt% was prepared by combining similar dissolve mutually theory with latex compounding techniques. Before polymerization, double bonds were introduced onto the surface of the SiO2particles with the silane-coupling agent. The core-shell structure silica-poly(methyl methacrylate), SiO2-PMMA, nanoparticles were formed by grafting polymerization of MMA on the surface of the modified SiO2particles via in situ emulsion, and then NR/SiO2nanocomposite was prepared by blending SiO2-PMMA and PMMA-modified NR (NR-PMMA). The Fourier transform infrared spectroscopy results show that PMMA has been successfully introduced onto the surface of SiO2, which can be well dispersed in NR matrix and present good interfacial adhesion with NR phase. Compared with those of pure NR, the thermal resistance and tensile properties of NR/SiO2nanocomposite are significantly improved.

Synthesis of Poly(Methyl Methacrylate)-Caprolactam-Sericin Nanoparticles and their Reinforcing Effect on Mechanical Properties of Natural Rubber

2017 ◽  
Vol 48 ◽  
pp. 177-190 ◽  
Author(s):  
Wei Ru Zhao ◽  
Xiao Hui Tian ◽  
Jin Yu Sun ◽  
Kun Tao Zhang ◽  
Yi Zhong Yuan
Keyword(s):  
Natural Rubber ◽  
Methyl Methacrylate ◽  
Interfacial Adhesion ◽  
Forming Process ◽  
Poly Methyl Methacrylate ◽  
Transmission Electron ◽  
Film Forming ◽  
Higher Temperature ◽  
Blending Process ◽  
The Difference

Two core-shell structure poly methyl methacrylate-caprolactam (PMMA-CPL) and poly methyl methacrylate-caprolactam-sericin (PMMA-CPL-SS) nanoparticles were synthesized by emulsion polymerization. A latex blending process was performed on preparation of natural rubber (NR) blends, NR/PMMA-CPL and NR/PMMA-CPL-SS. Transmission electron microscopy (TEM) images showed that PMMA-CPL and PMMA-CPL-SS nanoparticles covering on the surface of NR particles homogeneously. SEM, AFM, ATR-FTIR and DSC were used to compare the difference between NR/PMMA-CPL-SS and NR/PMMA-CPL. The results showed that addition of SS improved the smoothness and reduced the amount of incompatible particles on the surface of NR/PMMA-CPL-SS film. Due to the introduction of CPL and SS, the number of escaping particles on the surface of NR was decreased during film forming process and the Tg of NR shifted to a higher temperature. The results indicated that the interfacial adhesion and compatibility of PMMA and NR were improved. Mechanical testing showed that PMMA-CPL nanoparticles could improve the mechanical property of NR. When the content of PMMA-CPL-SS was 10%, the tensile strength of NR/PMMA-CPL-SS film was increased by 19.6% compared to NR/PMMA-CPL. Moreover, the NR/PMMA-CPL-SS film exhibited a higher hydrophilic property after modification with PMMA-CPL-SS nanoparticles.

Silica-Polymer Core-Shell Particles for Fabrication of Poly(methyl methacrylate) Composite Materials

2012 ◽  
Vol 531 ◽  
pp. 153-156
Author(s):  
Ren Gui Peng ◽  
Cheng En He ◽  
Wei Tang ◽  
Yue E Liu ◽  
Ying Kui Yang
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Composite Materials ◽  
Glass Transition Temperature ◽  
Methyl Methacrylate ◽  
Interfacial Adhesion ◽  
Core Shell ◽  
Poly Methyl Methacrylate ◽  
The Matrix ◽  
Shell Particles

Poly(n-butyl acrylate) grafted silica nanoparticles were compounded with poly(methyl methacrylate) to yield silica/polymer composites with the improved dispersion of silica and interfacial adhesion with the matrix, thus showing increases in storage modulus and glass transition temperature.

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