AbstractThe influence of poly(butylene succinate) (PBS) crystals on the crystallinity of poly(ethylene oxide) (PEO) in PBS/PEO blends, which exhibit interpenetrating spherulites, was examined. The degree of crystallinity, ϕ, of each component was obtained by pulsed nuclear magnetic resonance (NMR). The value of ϕ of PBS exhibited a maximum that was larger than that of the homopolymer, whereas PEO exhibited a nearly constant ϕ throughout the composition. The dilution effect, order of crystallization, and change in the glass transition temperature upon blending were discussed as factors contributing to the ϕ. PEO exhibited an apparent secondary crystallization, where ϕ gradually increased and the mobility of the chain segments was suppressed. The secondary process of PBS, on the other hand, was nearly negligible.The influence of poly(butylene succinate) (PBS) crystals on the crystallinity of poly(ethylene oxide) (PEO) in PBS/PEO blends, which exhibit interpenetrating spherulites, was examined. The degree of crystallinity, ϕ, of each component was obtained by pulsed nuclear magnetic resonance (NMR). The dilution effect, order of crystallization, and change in the glass transition temperature upon blending were discussed as factors contributing to the ϕ. PEO exhibited an apparent secondary crystallization, where ϕ gradually increased and the mobility of the chain segments was suppressed. The secondary process of PBS was nearly negligible.

中文翻译：

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聚（丁二酸丁二醇酯）和聚（环氧乙烷）互穿球晶的结晶度和链段迁移率

摘要研究了聚（丁二酸丁二醇酯）（PBS）晶体对 PBS/PEO 共混物中聚（环氧乙烷）（PEO）结晶度的影响，该混合物表现出互穿球晶。通过脉冲核磁共振 (NMR) 获得每个组分的结晶度 φ。PBS 的 φ 值显示出一个最大值，大于均聚物的值，而 PEO 在整个组合物中表现出几乎恒定的 φ 值。稀释效应、结晶顺序和混合时玻璃化转变温度的变化被讨论为影响 φ 的因素。PEO表现出明显的二次结晶，其中φ逐渐增加并且链段的流动性受到抑制。另一方面，PBS 的二次过程几乎可以忽略不计。研究了聚（丁二酸丁二醇酯）（PBS）晶体对 PBS/PEO 混合物中聚（环氧乙烷）（PEO）结晶度的影响，该混合物表现出互穿球晶。通过脉冲核磁共振 (NMR) 获得每个组分的结晶度 φ。稀释效应、结晶顺序和混合时玻璃化转变温度的变化被讨论为影响 φ 的因素。PEO表现出明显的二次结晶，其中φ逐渐增加并且链段的流动性受到抑制。PBS 的二次过程几乎可以忽略不计。通过脉冲核磁共振 (NMR) 获得每种成分的含量。稀释效应、结晶顺序和混合时玻璃化转变温度的变化被讨论为影响 φ 的因素。PEO表现出明显的二次结晶，其中φ逐渐增加并且链段的流动性受到抑制。PBS 的二次过程几乎可以忽略不计。通过脉冲核磁共振 (NMR) 获得每种成分的含量。稀释效应、结晶顺序和混合时玻璃化转变温度的变化被讨论为影响 φ 的因素。PEO表现出明显的二次结晶，其中φ逐渐增加并且链段的流动性受到抑制。PBS 的二次过程几乎可以忽略不计。