高强度聚离子复合物水凝胶的制备及其加工性能研究
详细信息 查看官网全文
- 英文论文题名：Preparation of Tough Polyion Complex Hydrogels and Their Processibility
- 论文作者：朱凤博 ; 吴子良 ; 钱劲 ; 郑强
- 英文论文作者：Fengbo Zhu ; Zi Liang Wu ; Jin Qian ; Qiang Zheng ; MOE Key Laboratory of Macromolecular Synthesis and Functionalization ; Department of Polymer Science and Engineering ; Zhejiang University ; Soft Matter Research Center ; Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province ; Department of Engineering Mechanics ; Zhejiang University
- 年：2016
- 作者机构：浙江大学软物质研究中心浙江省软体机器人及智能器件重点实验室浙江大学航空航天学院;浙江大学高分子科学与工程学系教育部高分子合成与功能构造重点实验室;
- 论文关键词：高强度水凝胶 ; 聚离子复合物 ; 超分子水凝胶 ; 加工性
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第十七分会：流变学
- 语种：中文
- 分类号：TQ427.26
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第十七分会 ; 流变学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：145k
- 原文格式：D
- 会议级别：全国
摘要
高强度水凝胶由于其优异的力学性能在软材料领域引起了广泛的注意,但是通过化学键交联制备的高强水凝胶如双网络水凝胶往往具有较差的加工性,这极大地限制了这类材料在实际应生活中的使用~([1])。因此,本文介绍一种聚离子复合体(PIC)水凝胶,这种水凝胶完全由离子键交联,它不仅具有出色的机械性能(拉伸强度约3.7MPa,断裂伸长率达到700%,撕裂能达到8000J/m~2),而且由于其中的离子键的强度能够通过加入盐水的浓度来调控,使得这种材料能够通过模压、挤出等加工方式制备具有特定形状的水凝胶~([2])。在纯水中浸泡后,凝胶中的小分子盐以及对离子扩散出来,离子键恢复强度,得到高强度的水凝胶。其次,由于离子键的动态可逆性,这种水凝胶还表现出出色的自回复、修复性能。这种具有可加工性能的高强度水凝胶将有望应用于在软体机器人和组织工程等领域。
Tough hydrogels have attracted have received increasing attentions due to its excellent mechanical properties.However,tough hydrogels often have poor processibility,which greatly limits its practical applications.We introduced here processing a tough hydrogel,which is completely crosslinked by ionic bonds.This polyionic complex(PIC) hydrogel possesses excellent mechanical properties,with tensile fracture stress,fracture strain and tearing fracture energy being 3.7 MPa,700%and 8000 J/m,respectively.Moreover,the strength of the ionic bonds can be effectively tuned by saline solution with selected concentration,making it possible to process this hydrogel by normal processing methods like compression moulding or extruding.This PIC hydrogel also exhibits stimuli-triggered healing properties owning to the dynamic and reversible nature of the ionic bonds.This study should promote the applications of tough PIC gels in structural elements of soft actuators and artificial organs.
Tough hydrogels have attracted have received increasing attentions due to its excellent mechanical properties.However,tough hydrogels often have poor processibility,which greatly limits its practical applications.We introduced here processing a tough hydrogel,which is completely crosslinked by ionic bonds.This polyionic complex(PIC) hydrogel possesses excellent mechanical properties,with tensile fracture stress,fracture strain and tearing fracture energy being 3.7 MPa,700%and 8000 J/m,respectively.Moreover,the strength of the ionic bonds can be effectively tuned by saline solution with selected concentration,making it possible to process this hydrogel by normal processing methods like compression moulding or extruding.This PIC hydrogel also exhibits stimuli-triggered healing properties owning to the dynamic and reversible nature of the ionic bonds.This study should promote the applications of tough PIC gels in structural elements of soft actuators and artificial organs.
引文
[1]Luo,F.;Sun,T.L.;Nakajima,T.;Kurokawa,T.;Zhao,Y.;Sato,K.;Ihsan,A.B.;Li,X.;Guo,H.;Gong,J.P.Adv.Mater.2015,27:2722.
[2]Zhu,F.;Lin,X.Y.;Wu,Z.L.Cheng,L.;Yin,J.;Song,Y.;Qian,J.;Zheng,Q.Polymer 2016,95:9.
[2]Zhu,F.;Lin,X.Y.;Wu,Z.L.Cheng,L.;Yin,J.;Song,Y.;Qian,J.;Zheng,Q.Polymer 2016,95:9.