Control of porosity in hierarchically porous polymers derived from hyper‐crosslinked block polymer precursors

Kim Soobin; Seo Myungeun

摘要

ABSTRACT > We report an approach to control the pore characteristics of hierarchically porous polymers (HPPs) containing micropores in a well‐defined 3D continuous mesoporous framework, by the hyper‐crosslinking reaction of a crosslinked block polymer precursor polylactide‐ b ‐poly(vinylbenzyl chloride‐ co ‐styrene‐ co ‐divinylbenzene) (PLA‐ b ‐P(VBzCl‐ co ‐S‐ co ‐DVB)) consisting of bicontinuous PLA and P(VBzCl‐ co ‐S‐ co ‐DVB) microdomains. We investigated the hyper‐crosslinking reaction of P(VBzCl‐ co ‐S‐ co ‐DVB)s synthesized by reversible addition‐fragmentation chain transfer (RAFT) copolymerization, and then examined the effect of VBzCl, S, DVB, and polylactide macrochain transfer agent (PLA‐CTA) contents in the polymerization mixture on the pore characteristics of the HPPs. We demonstrate that while the VBzCl content responsible for the hyper‐crosslinking reaction primarily governs microporosity, the DVB content has a strong influence on the mesopore structure, as it determines the onset of the gelation of the polymerization mixture, which arrests the emerging disordered bicontinuous morphology induced by the polymerization‐induced microphase separation process. Because the PLA microdomains template the percolating mesoporous space, mesoporosity was mainly controlled by the PLA‐CTA contents. The synergistic combination of hyper‐crosslinking and block polymer self‐assembly in the HPP formation provided a highly reinforced mesoporous framework, stable against pore collapse, and interconnected mesopores. These facilitated diffusion to the microporous surfaces, suggesti </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> >我们报告一种控制孔特性的方法通过交联嵌段聚合物前体polylactide- -poly（乙烯基苄基 - ）的超交联反应，含有微孔的分层多孔聚合物（HPP）含有微孔的微孔。 CO </ i> - 酯 - CO </ I> - 二氨基苯）（PLA- B </ I> -P（VBZCL- <I> CO-<I> CO由双连续PLA和P（VBZCL- <I> CO CO / I> -CE- CO CO / I> -DVB）组成的</ i> -DVB）。我们研究了通过可逆添加 - 碎片链转移（RAFT）共聚合成的P（VBZCL- <I> CO-CO-CO-CO> CO> CO CO-CO> CO> CO-CO> CO-I> -DVB）的超交联反应。检查VBZCl，S，DVB和聚乳糖宏链转移剂（PLA-CTA）含量在聚合混合物中的影响对HPP的孔特性。我们证明，虽然负责超交联反应的VBZCL含量主要治理微孔，但DVB含量对中孔结构具有很强的影响，因为它决定了聚合混合物的凝胶化的开始，这捕捉出新的紊乱的双重形态由聚合诱导的微相分离过程诱导。因为PLA微摩擦模板渗透介孔空间，主要由PLA-CTA含量控制。 HPP地层中超交联和嵌段聚合物自组装的协同组合提供了高度增强的介孔框架，稳定对孔隙塌陷和相互连接的中孔。这些便于扩散到微孔表面，旨在提示 </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-35621/'>《Journal of Polymer Science, Part A. Polymer Chemistry》</a> <b style="margin: 0 2px;">|</b><span>2018年第8期</span><b style="margin: 0 2px;">|</b><span>共15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=Kim Soobin&option=202" target="_blank" rel="nofollow">Kim Soobin;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Seo Myungeun&option=202" target="_blank" rel="nofollow">Seo Myungeun;</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>Graduate School of Nanoscience and TechnologyKorea Advanced Institute of Science and Technology (KAIST)Daejeon 34141 Korea;</p> <p>Graduate School of Nanoscience and TechnologyKorea Advanced Institute of Science and Technology (KAIST)Daejeon 34141 Korea;</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/1184.html" title="有机化学">有机化学;</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=block copolymer self‐assembly&option=203" rel="nofollow">block copolymer self‐assembly;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=hierarchical pore structure&option=203" rel="nofollow">hierarchical pore structure;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=hyper‐crosslinking&option=203" rel="nofollow">hyper‐crosslinking;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=porous polymer&option=203" rel="nofollow">porous polymer;</a> </p> <div class="translation"> 机译：嵌段共聚物自组装;层次孔结构;超交联;多孔聚合物; </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/0704020726043.html">Control of porosity in hierarchically porous polymers derived from hyper‐crosslinked block polymer precursors</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Kim Soobin&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Kim Soobin,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Seo Myungeun&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Seo Myungeun </a> <a href="/journal-foreign-35621/" target="_blank" rel="nofollow" class="tuijian_authcolor">Journal of Polymer Science, Part A. 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