서지주요정보
산화방지제를 이용한 폴리프로필렌/층상 실리케이트 나노복합체의 제조와 특성에 관한 연구 = A study on the fabrication and characterization of polypropylene/layered silicate nanocomposites using antioxidants
서명 / 저자 산화방지제를 이용한 폴리프로필렌/층상 실리케이트 나노복합체의 제조와 특성에 관한 연구 = A study on the fabrication and characterization of polypropylene/layered silicate nanocomposites using antioxidants / 김종현.
저자명 김종현 ; Kim, Jong-Hyun
발행사항 [대전 : 한국과학기술원, 2003].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8014055

소장위치/청구기호

학술문화관(문화관) 보존서고

MCBE 03006

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

Polypropylene(PP)/layered silicate nanocomposites were prepared via simple melt mixing of three components, PP, layered silicates modified with octadecylamine(C18-MMT), and antioxidant, to investigate the role of antioxidant. By X-ray diffraction experiment, PP/C18-MMT composite without antioxidant showed immiscible state because PP and C18-MMT are quite incompatible each other. On the other hand, PP/C18-MMT nanocomposites with antioxidant showed the intercalated states with increased basal spacing of layered silicate. In rheological behavior, the nanocomposite with antioxidant showed higher storage modulus and complex viscosity than pure PP. However, PP/C18-MMT without antioxidant showed lower values owing to the bond breakage of PP molecules and the poor compatibility between PP and C18-MMT. The nanocomposite with 5wt% C18-MMT and 0.5phr antioxidant exhibited about 1.4 times higher tensile modulus and 1.3 times higher dynamic storage modulus than those of PP. These enhanced mechanical properties demonstrate the reinforcing effect of nano-scale dispersed layered silicates in PP matrix. It could be concluded that antioxidants played an important role in enhancing the compatibility between PP and C18-MMT. The influence of silicates on the crystallographic changes of PP during tensile deformation was investigated by using the technique of real time X-ray scattering. Both PP and PP/C18-MMT nanocomposite showed similar tensile deformation behaviors with yield point, strain softening and load-extension plateau during tensile deformation. However, the nanocomposite had the yield at smaller elongation deformation than PP due to the higher stiffness. The nanocomposite had the weaker ordering of polymer crystals than pure PP in the load-extension plateau region because silicates dispersed in PP matrix inhibited polypropylene crystals from ordering toward the tensile direction.

서지기타정보

서지기타정보
청구기호 {MCBE 03006
형태사항 viii, 66 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Jong-Hyun Kim
지도교수의 한글표기 : 정인재
지도교수의 영문표기 : In-Jae Chung
학위논문 학위논문(석사) - 한국과학기술원 : 생명화학공학과,
서지주기 참고문헌 : p. 62-66
주제 폴리프로필렌
나노복합체
polypropylene
nanocomposite
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