Supramolecular morphology of two-step melt-spun poly(dioxanone)fibers
Supramolecular morphology of two-step melt-spun poly(dioxanone)fibers
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两步熔纺聚二氧环己酮纤维的超分子形貌
DOI：
10.1007/s10853-011-5977-7
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Yutaka Kawahara
中科院分区：
文献类型：
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作者：
Masami Shibata;Chihiro Mochizuki;Takashi Senga;Yutaka Kawahara
研究了聚二氧杂环己酮(PPDX)纤维的熔融纺丝工艺，并在PPDX熔融温度以上进行了短周期退火，讨论了退火热处理对PPDX纤维性能的影响。用磷酸盐或高锰酸盐溶液腐蚀纤维进行的形态研究表明，纤维呈皮芯结构，皮层和核心区都由一束微纤维组成。微束X射线衍射分析表明，生产过程中的短周期退火热处理仅略微促进了纤维表层的晶化，但有助于增加非晶链在皮肤附近的堆积，这似乎是纤维水解降解行为的控制因素。
Structure of poly(dioxanone) (PPDX) fibers produced through a two-step melt-spinning process with an additional short-period annealing above the melting temperature of PPDX was investigated and the effect of annealing on the degradation behavior was discussed. The morphological study carried out by etching the fibers using a phosphate or permanganate solution suggested that the fibers take a skin–core structure, and both the skin layer and the core region consist of a bundle of microfibrils. The micro-beam X-ray diffraction analysis revealed that the short-period annealing in the production process only slightly promotes the crystallization in the skin layer but contributes to increasing the packing of amorphous chains near the skin, which seems to be the controlling factor of the hydrolytic degradation behavior of the fibers.