서지주요정보
Synthesis and characterization of IPN's based on styrenic block copolymer = 스틸렌계 블럭 공중합체를 이용한 IPN의 합성 및 특성에 관한 연구
서명 / 저자 Synthesis and characterization of IPN's based on styrenic block copolymer = 스틸렌계 블럭 공중합체를 이용한 IPN의 합성 및 특성에 관한 연구 / Min-Hyeon Han.
저자명 Han, Min-Hyeon ; 한민현
발행사항 [대전 : 한국과학기술원, 1997].
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소장정보

등록번호

8007085

소장위치/청구기호

학술문화관(문화관) 보존서고

DAME 97003

SMS전송

도서상태

이용가능

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반납예정일

초록정보

In the present work, synthesis and characteristics of the interpenetrating polymer networks(IPN's) based on styrenic triblock copolymer has been studied. For the preparation of IPN, styrenic copolymers, polystyrene-polybutadiene-polystyrene(SBS) and polystyrene-poly(ethylene buthylene)-polystyrene(SEBS), were dissolved into the mixture of methyl methacrylate(MMA) and n-butyl acrylate(n-BA), or styrene monomer respectively. 3 mol\% of ethylene glycol dimethacrylate(EGDMA) or 1.5 mol% divinyl benzene(DVB)was used as a crosslinking agent and 1 wt% 2,2'-azobisisobutyronitrile(AIBN) was used as a initiator. Reaction temperature was kept at 60℃. Common solvent was used to know the influence of the presence of cosolvent during reaction, and toluene was selected as a cosolvent via swelling test. Corresponding semi-IPN, synthesized without crosslinking agent, of the same polymer composition was also evaluated for comparison. To characterize the IPN's, phase separation behavior, dynamic mechanical and tensile properties were examined as well as the investigation of morphology by TEM. The conversion of P(MMA-co-nBA) during the synthesis of IPN decreased by the presence of cosolvent in reaction medium and by increasing SBS concentration. Cloud conversion at the onset of phase separation was found to be higher in IPN than in semi-IPN and increased by the cosolvent. The phase separation mechanism during reaction was thought to be the spinodal decomposition through the light scattering measurement and morphology investigation using TEM. For the SBS/P(MMA-co-nBA) IPN, SBS appeared to be more continuous because of the low concentration of polyacrylate when the phase separation begins. Domain size increased by the presence of cosolvent and by decreasing of SBS content. From the dynamic mechanical behavior, two Tg peaks moved toward each other depending on the SBS concentration, which implied the improved intermixing. For the SEBS/P(MMA-co-nBA) IPN, spinodal structure was observed. The domain size was found to be larger than that of corresponding SBS/P(MMA-co-nBA), and this can be attributed to the fact that little grafting between components formed during the reaction of SEBS/P(MMA-co-nBA) IPN. Similar results were also obtained for SBS/PS IPN's.

서지기타정보

서지기타정보
청구기호 {DAME 97003
형태사항 xiii, 158 p. : 삽도 ; 26 cm
언어 영어
일반주기 저자명의 한글표기 : 한민현
지도교수의 영문표기 : Sung-Chul Kim
지도교수의 한글표기 : 김성철
수록 잡지명 : "Morphology and Mechanical Properties of Styrene-Butadiene-Styrene / Poly(Methyl Methacrylate-co-n-Butyl Acrylate) Interpenetrating Polymer Networks". Polymers for Advanced Technology. John Wiley & Sons Inc.
학위논문 학위논문(박사) - 한국과학기술원 : 신소재공학과,
서지주기 Reference : p. 144-152
주제 Styrene block copolymer
IPN
Morphology
Mechanical property
Synthesis
스틸렌 공중합체
아이피엔
몰폴로지
물성
합성
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