Study on recording stability and optical quality of photopolymer based on sulfonated crosslinked polymer binder = 술폰화된 가교 고분자 바인더를 이용한 광고분자의 기록 안정성과 광학 특성에 관한 연구

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The objective of the research is to synthesis novel polymer binder with outstanding dimensional stability and manufacture new photopolymer with excellent recording stability and optical quality for holographic application. In this study, a new photopolymers including polymer binder with nanoporous structure based on sulfonated crosslinked ionomer were prepared and investigated their optical performance. The polymer binder was synthesized with three monomers, which were AMPS, HEDA and EHA by UV- curing with benzophenone. After the synthesized polymer binders were purified, whether residual monomer exist or not was identified with $^1H$ NMR and sulfur contents were measured with Elemental analyzer. The nanostructure of the polymer binder, ion cluster, was observed at $q = 0.1~0.4 Å^{-1}$ via SAXS and identified by measuring two $T_g$ via DSC. For the preparation of photopolymer with nano-domain, polymer binder is dipped in photosensitive solution composed of methylene blue (MB) as photosensitizer and triethanolamine (TEA) as initiator together with acrylamide (AA) as monomer. The nanostructure of the photopolymer was also identified with SAXS. The photopolymer was recorded with unslanted geometry at I=20mW/㎠ with linear polarized He-Ne laser beams (8mW) with 633nm wavelength. The laser was split into two beam with an intensity ratio 1:1 by a beam splitter and recorded in θ=15˚ from the normal of glass substrate. The intensities of the diffracted and undiffracted light were measured at diode by blocking one of the writing beams. The photopolymers had different uptake amounts with solvents of photosensitive solution, crosslinking density, uptake temperature, neutralization time and the content of the AMPS. Therefore, photopolymers showed different optical performance such as diffraction efficiency, transmittance and sensitivity. Our new photopolymer exhibited outstanding recording stability due to chemically and physically crosslinked binder and excellent optical ...
Advisors
Park, Jung-Kiresearcher박정기researcher
Description
한국과학기술원 : 생명화학공학과,
Publisher
한국과학기술원
Issue Date
2004
Identifier
238389/325007  / 020023539
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 생명화학공학과, 2004.2, [ ix, 89 p. ]

Keywords

BRAGG``S DETUNING; GRATING DISTORTION; SENSITIVITY; TRANSMITTANCE; DIFFRACTION EFFICIENCY; PHOTOPOLYMER; ION CLUSTER; SULFONATED CROSSLINKED POLYMER BINDER; RECORDING STABILITY; 기록안정성; 브래그 디튜닝; 격자왜곡; 민감도; 투과율; 회절효율; 술폰화된 고분자 바인더; 이온 크러스터; 광고분자

URI
http://hdl.handle.net/10203/29832
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=238389&flag=dissertation
Appears in Collection
CBE-Theses_Master(석사논문)
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