基于聚<italic style="font-style: italic">β</italic>-环糊精模板效应的可拉伸功能性超分子水凝胶

王丽媛; 程平章; 郭明雨

doi:10.11777/j.issn1000-3304.2018.18041

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基于聚β-环糊精模板效应的可拉伸功能性超分子水凝胶

研究论文 | 更新时间：2021-01-26

- 基于聚β-环糊精模板效应的可拉伸功能性超分子水凝胶
- Stretchable and Functional Supramolecular Hydrogels Based on the Template Effect of Poly(β-cyclodextrin)
- 高分子学报 2018年0卷第8期页码：1097-1106
- 作者机构：
  
  苏州大学材料与化学化工学部　苏州 215123
- 作者简介：
  
  E-mail: guomingyu@suda.edu.cn Mingyu Guo, E-mail: guomingyu@suda.edu.cn
- 基金信息：
  
  国家自然科学基金(基金号 21304063)和国家重点研发计划(项目号 2016YFC1100100)资助()
- DOI：10.11777/j.issn1000-3304.2018.18041
  中图分类号：
- 纸质出版日期：2018-8，
  
  收稿日期：2018-2-2，
  
  修回日期：2018-3-8，
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王丽媛, 程平章, 郭明雨. 基于聚β-环糊精模板效应的可拉伸功能性超分子水凝胶[J]. 高分子学报, 2018,0(8):1097-1106.

Li-yuan Wang, Ping-zhang Cheng, Ming-yu Guo. Stretchable and Functional Supramolecular Hydrogels Based on the Template Effect of Poly(β-cyclodextrin)[J]. Acta Polymerica Sinica, 2018,0(8):1097-1106.
王丽媛, 程平章, 郭明雨. 基于聚β-环糊精模板效应的可拉伸功能性超分子水凝胶[J]. 高分子学报, 2018,0(8):1097-1106. DOI： 10.11777/j.issn1000-3304.2018.18041.

Li-yuan Wang, Ping-zhang Cheng, Ming-yu Guo. Stretchable and Functional Supramolecular Hydrogels Based on the Template Effect of Poly(β-cyclodextrin)[J]. Acta Polymerica Sinica, 2018,0(8):1097-1106. DOI： 10.11777/j.issn1000-3304.2018.18041.

摘要

以

-环糊精与环氧氯丙烷的线形共聚物为大分子主体，以亲水性短链修饰的含可聚合双键的二茂铁单体为客体分子，利用二者间的主-客体包结络合作用，制备了一种新型的“大分子超分子交联剂”. 进而借助聚

-环糊精的大分子超分子模版效应，通过简单自由基共聚合反应，实现了基于

-环糊精与二茂铁客体分子间包结络合作用的可超长拉伸、抗刺、黏附性超分子水凝胶的制备.

Abstract

-cyclodextrin-ferrocene host-guest inclusion complex has been widely used to construct various functional supramolecular hydrogels

but all these reported hydrogels are often very weak and/or brittle. In this work

-cyclodextrin (

-CD) based linear copolymer (poly

-CD) was synthesized and used as the macromolecular host

hydrophilic and flexible spacer modified ferrocene (Fc) monomer acted as the guest. The polymerizable Fc monomer was preloaded on poly

-CD to form a novel type of ‘macromolecular supramolecular cross-linker’ (MSCL) owing to the inclusion complexation between

-CD and Fc. For the first time

stretchable

stab-resistant and adhesive supramolecular hydrogels were prepared

via

simple free-radical copolymerization of MSCL and acrylamide. Tensile-testing results showed that the obtained supramolecular hydrogel can be stretched up to more than 30 times of its original length without breaking. The gel can also be stabbed by sharp tips of scissors or pencil without fracture

indicating excellent stab resistance property. At the same time

the hydrogel also exhibited strong adhesion to the surfaces of human hand

hydrophilic glass or hydrophobic porcine skin. We attribute these distinguished behaviors to the successful use of poly

-CD and the introduction of flexible hydrophilic spacer to the Fc monomer. Firstly

poly

-CD acted as a macromolecular supramolecular imprint to form pre-organized Fc-poly

-CD complexes

and thus resulted in relatively local high density of pendent Fc groups in the polymeric network. This is different from most of the reported host-guest interaction based supramolecular hydrogels

where the host and guest groups are randomly attached in the polymeric network. Secondly

after copolymerization

poly

-CD was homogeneously immersed in the network by noncovalent interaction but not covalently conjugated in the network

which would greatly limit its mobility. Finally

the introduction of hydrophilic spacer on Fc not only can yield water soluble Fc-poly

-CD macromolecular supramolecular complex

but also provide the released free Fc groups with more flexibility. Altogether

the local high density of both the guest and host groups in the network combined with their relatively high flexibility provided the present supramolecular hydrogels with excellent mechanical properties.

关键词

主客体水凝胶模版效应抗刺穿黏附

Keywords

Host-guestHydrogelTemplate effectStab-resistantAdhesive

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基于聚β-环糊精模板效应的可拉伸功能性超分子水凝胶

Stretchable and Functional Supramolecular Hydrogels Based on the Template Effect of Poly(β-cyclodextrin)

DOI：10.11777/j.issn1000-3304.2018.18041

摘要

Abstract

关键词

Keywords

references