Poly(vinyl methyl ether) poly(methyl methacrylate) blends using diblock copolymer of styrene and methyl methacrylate as compatibilizer
Data(s) |
1997
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Resumo |
Blends of poly(vinyl methyl ether) (PVME) and poly(methyl methacrylate) (PMMA) compatibilized by poly(styrene-block-methyl methacrylate) (P(S-b-MMA)) ale studied by FT-IR, DSC, excimer fluorescence spectrometry, and scanning electron microscopy (SEM). In FT-IR measurement the ratio of absorption intensity at 1107 cm(-1) to that at 1085 cm(-1) (I-1107/I-1085) reaches a minimum at about 10wt% block copolymer content. DSC results show that the glass transition temperature of PVME in the blends has a maximum at 10 wt% copolymer content. In plots of the ratio of excimer-to-monomer fluorescence emission intensities (I-E/I-M) VS block copolymer content, I-E/I-M increases rapidly above 10%. Ail these phenomena show that PS block chains penetrate into PVME: domains on addition of block copolymer. Above 10% copolymer content, block copolymer chains tend to form micelles in bulk phase. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Zhao HY;Gao M;Huang BT.Poly(vinyl methyl ether) poly(methyl methacrylate) blends using diblock copolymer of styrene and methyl methacrylate as compatibilizer,POLYMER JOURNAL,1997,29(8):637-641 |
Palavras-Chave | #POLYSTYRENE POLYVINYL METHYL-ETHER) #AROMATIC VINYL-POLYMERS #EXCIMER FLUORESCENCE #BLOCK COPOLYMERS #HOMOPOLYMER BLENDS #MOLECULAR-WEIGHT #ENERGY MIGRATION #INTERDIFFUSION #TEMPERATURE #MISCIBILITY |
Tipo |
期刊论文 |