Solventless Organic-Inorganic Hybrid Light Sensitive Optical Materials
Date Issued
2004
Date
2004
Author(s)
Chiw, Nyet-Seong
DOI
zh-TW
Abstract
Acrylates are easy to process, they exhibit good optical properties and adhesive strength, they are useful in the optical technology. However, their glass transition temperature and mechanical properties are inferior as compared with inorganic materials. Thus, we have incorporated inorganic component into poly butyl acrylate to enhance its property.
Copolymerized butylacrylate with 3-methacryloxypropyl trimethoxy silane by free radical polymerization in tetrahydrofuran. Tetraethoxy silane was added into the copolymer to adjust the concentration of inorganic moiety. The silane was removed by vacuum, then the material was blended with monomers and photoinitiators to prepare UV curable solventless organic-inorganic hybrid materials. The material is in liquid form which can be easily applied on different substrates and formed different patterns using photolithography technique.
The material after UV curing exhibits high glass transition temperature(>200oC), high transparency(>95%), lower moisture absorption(<5%), high Young's modulus(>2.5Gpa), low coefficient of thermal expansion(CTE=76ppm/oC).The refractive index of the material is about 1.5 and the inorganic nanoparticle size domain is about 15nm.
Subjects
奈米結構
溶膠凝膠法
有機無機材料
silica sol-gel
nanodomain
Organic-inorganic hybrid materials
butyl acrylate
Type
thesis
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