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首页> 外文期刊>Journal of Applied Polymer Science >EFFECTS OF VARIOUS ESTER GROUPS IN GAMMA-RADIATION DEGRADATION OF SYNDIOTACTIC POLY(METHACRYLATE)S
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EFFECTS OF VARIOUS ESTER GROUPS IN GAMMA-RADIATION DEGRADATION OF SYNDIOTACTIC POLY(METHACRYLATE)S

机译：各种酯基对间规聚甲基丙烯酸甲酯γ射线辐射降解的影响

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摘要

The gamma irradiation of poly(methacrylate)s with various ester groups at room temperature was investigated by gel permeation chromatography and NMR techniques. The G values for scission and crosslinking for each of the polymers were estimated from the changes in the molecular weights and molecular weight distributions. The new structures formed during gamma irradiation were examined by H-1-NMR spectroscopy. All of the investigated poly(alkane methacrylate)s were found to produce the alkane formates during gamma irradiation, and for poly(2-methyl heptyl methacrylate) G(S) was less than 4G(X), indicating gel formation in this polymer. In the investigation of poly(benzyl methacrylate), no formate ester was found, but some small molecule compounds formed from the benzyl radical were detected. The benzyl group was also found to stabilize the polymer against radiation damage. (C) 1996 John Wiley & Sons, Inc. [References: 14]
机译：通过凝胶渗透色谱法和NMR技术研究了室温下具有各种酯基的聚（甲基丙烯酸酯）的γ辐射。从分子量和分子量分布的变化估计每种聚合物的断裂和交联的G值。通过H-1-NMR光谱检查了在γ辐照过程中形成的新结构。发现所有研究的聚（甲基丙烯酸烷烃）在γ辐射过程中产生烷甲酸酯，对于聚（甲基丙烯酸2-甲基庚基酯），G（S）小于4G（X），表明该聚合物中形成凝胶。在聚甲基丙烯酸苄酯的研究中，未发现甲酸酯，但检测到一些由苄基形成的小分子化合物。还发现苄基使聚合物稳定以防辐射损伤。 （C）1996 John Wiley＆Sons，Inc. [参考：14]

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