摘要
海洋中的贻贝依靠丝足(Byssus)与足盘(Plaque)可以在潮湿及水下环境中快速而牢固地黏附于各种固体表面。贻贝强健的足部具有沟渠状的生理结构,通过类似于"注塑生产"的生理过程,它们可以生成丝足与足盘。贻贝将液态的蛋白质挤压到沟渠里,只需几秒钟时间,这些蛋白质就能形成一条条发丝一样纤细的丝足。每条丝足的末端都有一个黏性足盘,足盘可以牢牢地黏附在岩石及固体表面。丝足及足盘由多种黏附蛋白(Mfps)组成,且几乎每种黏附蛋白都含有L-3,4-二羟基苯丙氨酸(DOPA)成分。在过去的数十年间,科研人员基本揭示了贻贝黏附蛋白的结构及其黏附机理。DOPA的儿茶酚基团,通过氧化交联、金属螯合、氢键、静电作用、疏水作用、π-π作用、阳离子-π作用等各种共价和非共价相互作用,实现强大的界面黏接。基于贻贝黏附蛋白的结构及其黏附机理,通过使用DOPA及其类似物修饰的聚合物体系,人们得到了多种具有优秀机械性能和功能化的新型仿生多巴类水下胶黏剂。本综述首先介绍了贻贝黏附蛋白的组成特点及其黏附机理;随后分别介绍了凝聚层类胶黏剂、水凝胶类胶黏剂、智能型水下胶黏剂的结构特点及黏附机理;最后讨论了目前仿生水下胶黏剂存在的问题及未来发展前景。
Marine mussels can quickly and firmly anchor to foreign surfaces in seawater using their byssus and plaque.Mussels produce byssus and plaque through a physiological process similar to“injection production”.Mussels squeeze liquid protein into the ventral groove on their feet,which will then form hair-like byssus in seconds.Each byssus connects with a plaque at its end,and the plaque can firmly adhere to rocks or other solid surfaces.Byssus and plaque are composed of a variety of mussel foot proteins(Mfps),and almost every Mfps contains L-3,4-dihydroxyphenylalanine(DOPA).In the past few decades,researchers have basically revealed the structure of Mfps and their adhesion mechanism.The catechol group of DOPA achieves strong interfacial bonding through a variety of covalent and non-covalent interactions,such as oxidative crosslinking,metal-catechol coordination,hydrogen bonding,electrostatic interaction,hydrophobic interactions,π-πinteractions,cation-πinteractions,etc.Based on the structure of Mfps and their adhesion mechanism,a variety of new biomimetic DOPA adhesives with excellent mechanical properties and functionalization have been obtained using polymer system modified by DOPA and its analogues.In this review,we first introduce the composition and adhesion mechanism of Mfps,then discuss the corresponding structure characteristics and adhesion mechanism of coacervate adhesives,hydrogels adhesives and intelligent adhesives.Finally,the existing problems and future development prospects of underwater biomimetic adhesives are presented.
作者
王桂龙
崔辛
陈莹
胡振峰
梁秀兵
陈甫雪
Guilong Wang;Xin Cui;Ying Chen;Zhen-feng Hu;Xiubing Liang;Fuxue Chen(Defense Innovation Institute,Academy of Military Science,Beijing 100071,China;School of Chemistry&Chemical Engineering,Beijing Institute of Technology,Beijing 100081,China)
出处
《化学进展》
SCIE
CAS
CSCD
北大核心
2021年第12期2378-2391,共14页
Progress in Chemistry
关键词
贻贝
水下胶黏剂
仿生材料
儿茶酚
mussel
underwater adhesive
biomimetic materials
catechol
