Tough Wet Adhesion of Hydrogel

نویسندگان

  • Hyunwoo Yuk
  • Xuanhe Zhao
  • Rohan Abeyaratne
چکیده

In nature, robust interfacial adhesion plays crucial roles in maintaining integration and functionality of various physiological structures including tendon and cartilage to bones and epidermis to dermis in mammalian skins. For instance, the bonding of tendon and cartilage to bone is extremely tough (e.g., interfacial toughness ~800 Jm 2 ), yet such tough interfaces have not been achieved between synthetic hydrogels and various types engineering solids including rigid nonporous solids and elastomers. In this study, we report a strategy to design extremely robust interfacial bonding of synthetic hydrogeis containing 90 % water to various types of rigid engineering solids, precious metals and commonly-used elastomers. The design strategy is to anchor the long-chain polymer networks of tough hydrogels covalently to various solid surfaces, which can be achieved by diverse surface chemical treatments. We discuss the mechanism behind the proposed design strategy to further understand the tough wet adhesion of hydrogels in engineering and biological situations. We also demonstrate multiple novel applications of robust hydrogel-solid hybrids for both rigid engineering solids and elastomers. We discuss details of such new class of applications and their potential usefulness in diverse fields. Thesis Supervisor: Xuanhe Zhao Title: Associate Professor of Mechanical Engineering

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Versatile Molding Process for Tough Cellulose Hydrogel Materials

Shape-persistent and tough cellulose hydrogels were fabricated by a stepwise solvent exchange from a homogeneous ionic liquid solution of cellulose exposure to methanol vapor. The cellulose hydrogels maintain their shapes under changing temperature, pH, and solvents. The micrometer-scale patterns on the mold were precisely transferred onto the surface of cellulose hydrogels. We also succeeded i...

متن کامل

Tough Bonding of Hydrogels to Diverse Nonporous Surfaces

In many animals, the bonding of tendon and cartilage to bone is extremely tough (for example, interfacial toughness ∼800 J m(-2); refs ,), yet such tough interfaces have not been achieved between synthetic hydrogels and non-porous surfaces of engineered solids. Here, we report a strategy to design tough transparent and conductive bonding of synthetic hydrogels containing 90% water to non-porous...

متن کامل

Tough and tunable adhesion of hydrogels: experiments and models

Aspolymer networks infiltratedwithwater, hydrogels are major constituents of animal and plant bodies and have diverse engineering applications. While natural hydrogels can robustly adhere to other biological materials, such as bonding of tendons and cartilage on bones and adhesive plaques of mussels, it is challenging to achieve such tough adhesions between synthetic hydrogels and engineering m...

متن کامل

Fiber-reinforced tough hydrogels

Using strong fibers to reinforce a hydrogel is highly desirable but difficult. Such a composite would combine the attributes of a solid that provides strength and a liquid that transports matter. Most hydrogels, however, are brittle, allowing the fibers to cut through the hydrogel when the composite is loaded. Here we circumvent this problem by using a recently developed tough hydrogel. We fabr...

متن کامل

Design of stiff, tough and stretchy hydrogel composites via nanoscale hybrid crosslinking and macroscale fiber reinforcement.

Hydrogels' applications are usually limited by their weak mechanical properties. Despite recent great progress in developing tough hydrogels, it is still challenging to achieve high values of , toughness and modulus all together in synthetic hydrogels. In this paper, we designed highly stretchable, tough, yet stiff hydrogel composites via a combination of nanoscale hybrid crosslinking and macro...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2016