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首页> 外文期刊>Journal of Applied Polymer Science >Jet evolution and fiber formation mechanism of amylopectin rich starches in centrifugal spinning system
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Jet evolution and fiber formation mechanism of amylopectin rich starches in centrifugal spinning system

机译：离心纺纱系统中富含淀粉素富含淀粉的喷射演化与纤维形成机制

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摘要

This article reports the jet evolution process and fiber formation mechanism of the amylopectin rich starch solution in centrifugal spinning system, and the linear polyvinylpyrrolidone (PVP) is applied to compare with starch solution. The results indicate that jet evolution processes of starch solution include steady state and Rayleigh-Taylor instability over the whole concentration range for the spinnability investigation, which are due to the hyperbranched molecular of amylopectin. As a compression, the linear molecular chain PVP solution expresses a steady state jet under the spinning concentration. The spinnability results show that the obtained starch fibers are always containing the beads due to the Rayleigh-Taylor instability of jet, but can be effectively controlled by solution concentration and amylose/amylopectin. Instead, the PVP fibers show a rapid decreasing of beads till to almost disappear with the increasing of solution concentration, which due to the improvement of chain entanglement increase the steady state portion of jet with the increasing of concentration. The thermal properties of obtained fiber show that fibers obtained from amylose with more thermal stability.
机译：本文报道了离心纺丝系统中富含支链淀粉的淀粉溶液的射流演化过程和纤维形成机理，并用线性聚乙烯吡咯烷酮（PVP）与淀粉溶液进行了比较。结果表明，在可纺性研究的整个浓度范围内，淀粉溶液的射流演化过程包括稳态和瑞利-泰勒不稳定性，这是由于支链淀粉的超支化分子所致。作为压缩，线性分子链PVP溶液在纺丝浓度下表现为稳态射流。可纺性结果表明，由于射流的瑞利-泰勒不稳定性，所得淀粉纤维始终含有珠子，但可以通过溶液浓度和直链淀粉/支链淀粉进行有效控制。相反，随着溶液浓度的增加，PVP纤维的珠子迅速减少，直至几乎消失，这是由于链缠结的改善，随着溶液浓度的增加，射流的稳态部分增加。所得纤维的热性能表明，由直链淀粉制得的纤维具有更高的热稳定性。

著录项

  • 来源
    《Journal of Applied Polymer Science》 |2021年第18期|共11页
  • 作者

    Li Xianglong; Lu Yishen; Hou Teng; Zhou Jing; Wang Antuo; Zhang Xianggui; Yang Bin;

  • 作者单位

    Zhejiang Sci Tech Univ Int Inst Silk Coll Text Sci &

    Engn Natl Engn Lab Text Fiber Mat &

    Proc Technol Hangzhou Peoples R China;

    Zhejiang Sci Tech Univ Int Inst Silk Coll Text Sci &

    Engn Natl Engn Lab Text Fiber Mat &

    Proc Technol Hangzhou Peoples R China;

    Zhejiang Sci Tech Univ Int Inst Silk Coll Text Sci &

    Engn Natl Engn Lab Text Fiber Mat &

    Proc Technol Hangzhou Peoples R China;

    Zhejiang Sci Tech Univ Int Inst Silk Coll Text Sci &

    Engn Natl Engn Lab Text Fiber Mat &

    Proc Technol Hangzhou Peoples R China;

    Zhejiang Sci Tech Univ Int Inst Silk Coll Text Sci &

    Engn Natl Engn Lab Text Fiber Mat &

    Proc Technol Hangzhou Peoples R China;

    Zhejiang Sci Tech Univ Int Inst Silk Coll Text Sci &

    Engn Natl Engn Lab Text Fiber Mat &

    Proc Technol Hangzhou Peoples R China;

    Zhejiang Sci Tech Univ Int Inst Silk Coll Text Sci &

    Engn Natl Engn Lab Text Fiber Mat &

    Proc Technol Hangzhou Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 高分子化合物工业（高聚物工业）;
  • 关键词

    biomaterials; fibers; polysaccharides; rheology; viscosity and viscoelasticity;

    机译：生物材料;纤维;多糖;流变学;粘度和粘弹性;

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