Thermal shrinkage of electrospun PVP nanofibers

机译：电纺PVP纳米纤维的热收缩率

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ABSTRACT > This paper outlines the shrinkage of electrospun polyvinylpyrrolidone (PVP) fiber mats during thermal treatment. The thermal behavior and phase changes within the fibers were investigated by DSC and TGA/DTA. Five precursors with different PVP loading in ethanol were electrospun. The mats shrinkage as function of temperature was measured in the RT–200 °C range. Shrinkage rate drastically increased above the polymer glass transition point, T <sub>g</sub> (150–180 °C), due to increase in polymer chain mobility. Mats shrinkage at 200 °C as function of PVP concentration showed a minimum at ～10%wt. Below 10% PVP the mats morphology is non‐uniform, consisting of beads and fibers. Above 10% PVP, only flat and uniform fibers were observed. This paper outlines the dominant mechanism governing the mats shrinkage during heating. In addition, the effect of PVP concentration on the expansion of fibers diameter was investigated and found to be consistent with the linear shrinkage observing a minimum at ～10% PVP. The effect of applied voltage on mat shrinkage was investigated, and showed a minimum at 12 kV. Understanding the interplay between fibers morphology and thermal shrinkage allows precursor composition and system optimization needed for minimizing shrinkage negative effects on the structure and properties of electrospun fiber mats. ? 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2018 , 56 , 248–254 </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><Abstract XMLNS =“http://www.wiley.com/namespaces/wiley”type =“main”> <title type =“main”>抽象</ title> >本文概述了Electrepul聚乙烯吡咯烷酮的收缩（热处理期间PVP）纤维垫。通过DSC和TGA / DTA研究纤维内的热行为和相变。乙醇中具有不同PVP载荷的五个前体是Electrom ow。在RT-200℃的范围内测量作为温度的函数的垫子收缩。由于聚合物链迁移率的增加，收缩率在聚合物玻璃化转变点高于聚合物玻璃化转变点高于高于聚合物玻璃化转变点， T </ S>（150-180℃）。垫在200°C时收缩，因为PVP浓度的功能显示最小值〜10％。低于10％PVP垫形态是不均匀的，由珠子和纤维组成。高于10％PVP，仅观察到扁平和均匀的纤维。本文概述了加热过程中垫子收缩的主导机制。此外，研究了PVP浓度对纤维直径的膨胀的影响，并发现与观察到〜10％PVP的最小值的线性收缩率一致。研究了施加电压对乳垫收缩的影响，并在12 kV下显示最小。了解纤维形态与热收缩之间的相互作用允许最小化对电纺纤维垫的结构和性能的收缩负面影响所需的前体组合物和系统优化。还2017年Wiley期刊，Inc.J.Minon。 SCI。，B部分：聚合物。物理。 2018 </ b>， 56 </ i>，248-254 </ p> </ abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-35627/'>《Journal of Polymer Science, Part B. Polymer Physics》</a> <b style="margin: 0 2px;">|</b><span>2018年第3期</span><b style="margin: 0 2px;">|</b><span>共7页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Elishav Oren&option=202" target="_blank" rel="nofollow">Elishav Oren;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Beilin Vadim&option=202" target="_blank" rel="nofollow">Beilin Vadim;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Rozent Ofer&option=202" target="_blank" rel="nofollow">Rozent Ofer;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Shter Gennady E.&option=202" target="_blank" rel="nofollow">Shter Gennady E.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Grader Gideon S.&option=202" target="_blank" rel="nofollow">Grader Gideon S.;</a> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> <p>The Nancy and Stephen Grand Technion Energy ProgramTechnionHaifa 3200003 Israel;</p> <p>Chemical Engineering DepartmentTechnionHaifa 3200003 Israel;</p> <p>The Nancy and Stephen Grand Technion Energy ProgramTechnionHaifa 3200003 Israel;</p> <p>Chemical Engineering DepartmentTechnionHaifa 3200003 Israel;</p> <p>Chemical Engineering DepartmentTechnionHaifa 3200003 Israel;</p> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/1185.html" title="高分子化学（高聚物）">高分子化学（高聚物）;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=electrospinning&option=203" rel="nofollow">electrospinning;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=nanofiber&option=203" rel="nofollow">nanofiber;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=PVP&option=203" rel="nofollow">PVP;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=shrinkage&option=203" rel="nofollow">shrinkage;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=thermal properties&option=203" rel="nofollow">thermal properties;</a> </p> <div class="translation"> 机译：静电纺丝;纳米纤维;PVP;收缩;热性能; </div> </li> </ul> </div> </div> <div class="literature cardcommon"> <div class="similarity "> <h3 class="all_title" id="enpatent66">相似文献</h3> <div class="similaritytab clearfix"> <ul> <li class="active" >外文文献</li> <li >中文文献</li> <li >专利</li> </ul> </div> <div class="similarity_details"> <ul > <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/0704025811015.html">Thermal shrinkage of electrospun PVP nanofibers</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Elishav Oren&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Elishav Oren,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Beilin Vadim&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Beilin Vadim,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Rozent Ofer&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Rozent Ofer,</a> <a href="/journal-foreign-35627/" target="_blank" rel="nofollow" class="tuijian_authcolor">Journal of Polymer Science, Part B. 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href="/journal-cn-9121/" target="_blank" rel="nofollow" class="tuijian_authcolor"> . 工程塑料应用 </a> </span> <span> . 2020</span><span>,第005期</span> </span> </div> </li> <li> <div> <b>6. </b><a class="enjiyixqcontent" href="/academic-conference-cn_meeting-11922_thesis/02022501785.html">同轴电纺制备核壳结构纳米粒自组装电纺纤维毡</a> <b>[C]</b> <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=余灯广&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor"> . 余灯广</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=申夏夏&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">,申夏夏</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=聂伟&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">,聂伟</a> <span> <a href="/conference-cn-11922/" target="_blank" rel="nofollow" class="tuijian_authcolor"> . 雪莲杯第10届功能性纺织品及纳米技术应用研讨会 </a> <span> <span> . 2010</span> </span> </div> </li> <li> <div> <b>7. 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