Student Poster Presentation # 10 ( Session 1 )
Stimulus Responsive Bioinspired Adhesives for Finely Tunable Adhesion , Mechanical , and Optical Properties
Student Poster Presentation # 10 ( Session 1 )
Stimulus Responsive Bioinspired Adhesives for Finely Tunable Adhesion , Mechanical , and Optical Properties
Irawan Pramudya and Hoyong Chung Department of Chemical and Biomedical Engineering , Florida State University , Tallahassee , Florida 32310 , United States
Abstract
Bioinspired adhesive is often used to describe an adhesive that is synthesized from biological monomers and / or synthetic material to form a strong bond to biological tissue . In this work , three different types of bioinspired adhesives are synthesized by thermally initiated radical polymerization . First , an enhanced mechanical and optical properties were obtained from newly synthesized terpolymer adhesive , poly ( 2-methoxyethyl acrylate-co-Nmethacryloyl 3,4-dihydroxyl-L-phenylalanine-co-heptaisobutyl substituted polyhedral oligomeric silsesquioxane propyl methacrylate ) ( poly ( MEA-co-MDOPA-co-MPOSS ). Second , a photo-crosslinkable terpolymer adhesive , poly ( N-methacryloyl-3,4-dihydroxyl-L-phenylalanine-co-9- ( acryloyloxy ) butyl anthracene-9-carboxylate-coacrylic acid ), was synthesized for precise control of adhesion strength via crosslinking formation of anthracene groups under UV irradiation . Finally , a new water soluble and lectin recognizable adhesive , poly ( glucosamine methacrylate-co-N-methacryloyl-3,4-dihydroxyl-L-phenylalanine-co-3-azidopropyl methacrylate ) was synthesized . Herein , the azide group is used to form controllable crosslinking , which enables to tune adhesion property , through metal free click chemistry . Adhesion strength of the terpolymer was characterized by uniaxial indentation and lap shear adhesion test . When small amount of MPOSS ( 0.5 mol %) was incorporated , the terpolymer displayed strong adhesion property by indentation adhesion test , 23.2 ± 6.2 J / m 2 with 0.05 N preloading and 300 s holding time . The MPOSS increased optical transmittance in the visible light range , 450- 750 nm . The POSS containing adhesive was tested with human embryonic kidney cells ( HEK293 ) showing excellent bio-compatibility . In the second adhesive , the presence of anthracene monomer enhanced adhesion property in lap shear adhesion test ( 850 % enhancement – J / m 2 ) after the terpolymer was UV-irradiated at 352 nm . The third adhesive , glucose-based terpolymer ( glycopolymer ) adhesive contains glycomonomer that resembles natural saccharides and its carbohydrate moieties makes it attractive due to high water solubility as well as potential applications in biological recognition systems .
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