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논문 기본 정보

자료유형
학술저널
저자정보
Yuanjiao Hu (Changchun University of Technology) Shixin Song (Changchun University of Technology) Xue Lv (Changchun University of Technology) Shulin Sun (Changchun University of Technology)
저널정보
한국고분자학회 폴리머 폴리머 제42권 제2호
발행연도
2018.3
수록면
206 - 214 (9page)
DOI
10.7317/pk.2018.42.2.206

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초록· 키워드

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Carboxyl-functionalized multiwalled carbon nanotube (c-MWCNT) was used to enhance the properties of poly(butylene terephthalate)/polycarbonate (PBT/PC) blends by melt blending. The c-MWCNT inhibited transesterification reactions between PBT and PC. SEM result showed that most of the c-MWCNT dispersed in the PBT matrix and partial c-MWCNT lied between the interface of PBT and PC phases. c-MWCNT promoted the crystallization of PBT due to the decreased transesterification and the heterogeneous nucleating effect, which led to a 20 ℃ increase of the crystallization temperature. DMA test indicated that the miscibility between PBT and PC decreased with the c-MWCNT loading since the inhibited transesterification. When the c-MWCNT content was 4 wt%, the yield strength of 65.9 MPa and tensile modulus of 2116MPa were achieved, which corresponded to 23.9 and 19.5% increase relative to the pure PBT/PC blend. The conductivity and dielectric properties of PBT/PC were largely enhanced by the c-MWCNT. The σdc values of PBT/PC improved greatly by several orders of magnitude from 10-18 to 10-7 when the c-MWCNT content was 2 wt%. The dielectric constant at 100 Hz for the nanocomposites increased from 2.8 to 146 when the c-MWCNT loading varied from 0.1 to 4 wt%, which improved more than 50 times.

목차

Abstract
Introduction
Experimental
Results and Discussion
Conclusions
References

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