서지주요정보
판상 구조를 갖는 HDPE/Nylon 블렌드의 물성에 관한 연구 = Properties of HDPE/Nylon blend with laminar morphology
서명 / 저자 판상 구조를 갖는 HDPE/Nylon 블렌드의 물성에 관한 연구 = Properties of HDPE/Nylon blend with laminar morphology / 이상영.
저자명 이상영 ; Lee, Sang-Young
발행사항 [대전 : 한국과학기술원, 1993].
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소장정보

등록번호

8003861

소장위치/청구기호

학술문화관(문화관) 보존서고

MCHE 93009

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초록정보

The morphology and properties of HDPE/Nylon blend were studied. According to the processing condition, compatibilizer and composition ratio of HDPE, Nylon and compatibilizer, the blend shows the various morphology such as sphere, cylinder and laminar shape. The unusual barrier effects obtained at small concentrations of the barrier material (Nylon) are obtained by the controlled morphology of the dispersed phase and optimum formulation of the ingredients. In the case of laminar morphology, Nylon is distributed as large thin sheets parallel to the flow axis. These Nylon platelets act as barriers to the permeant molecule by providing a long tortuous path. In this study, laminar morphology of HDPE/Nylon blend was obtained using a single screw extruder with tubular die. Addition of compatibilizer in the HDPE/Nylon blend is essential for producing laminar morphology. Graft copolymers such as HDPE-g-MAH, HDPE-g-(MAH-co-St) were prepared by the reactive extrusion in the single screw extruder and twin screw extruder. HDPE-g-(MAH-co-St) showed high melt index as well as high graft yield of MAH. As compared to the permeability of the fine, isotropic dispersion of HDPE/Nylon blend, which was 1.2 times than that of HDPE virgin, the permeability of the laminar morphology was reduced 43 times than that of HDPE virgin. The interfacial tensions of HDPE/Nylon binary blend and HDPE/Nylon/compatibilizer ternary blend were obtained by rheological measurements. The interfacial tension of the ternary blend was reduced to 6.26 dyne/cm, compared to that of the binary blend, 16.31 dyne/cm. Computer simulation for the permeability of the HDPE/Nylon blend was carried out. Permeability of HDPE/Nylon blend with varying the morphology of HDPE/Nylon blend was calculated by GRM (Generalized Rayleigh Maxwell) relationship. As the Nylon platelet width was increased and thickness was decreased at constant volume fraction of Nylon, the estimated values showed the large reduction of the permeability. The simulated results were compared with the experimental values.

서지기타정보

서지기타정보
청구기호 {MCHE 93009
형태사항 [iv], 78 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Sang-Young Lee
지도교수의 한글표기 : 김성철
지도교수의 영문표기 : Sang-Chul Kim
학위논문 학위논문(석사) - 한국과학기술원 : 화학공학과,
서지주기 참고문헌 : p. 75-76
주제 Morphology.
Polymers.
표면 성질. --과학기술용어시소러스
고분자. --과학기술용어시소러스
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