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Effect of the mesoporous structure of titanium silicate (TS-1) zeolite on the melting behavior and isothermal crystallization behavior of poly(butylene succinate)/TS-1 zeolite hybrid composites

Title
Effect of the mesoporous structure of titanium silicate (TS-1) zeolite on the melting behavior and isothermal crystallization behavior of poly(butylene succinate)/TS-1 zeolite hybrid composites
Other Titles
TS-1 zeolite hybrid composites
Author
임승순
Keywords
mesoporous structure; TS-1 zeolite; isothermal crystallization; biodegradable polymer; BIODEGRADABLE ALIPHATIC POLYESTER; END-CAPPED POLY(L-LACTIDE); CO-BUTYLENE ADIPATE); ENZYMATIC DEGRADATION; NONISOTHERMAL CRYSTALLIZATION; KINETICS; NANOCOMPOSITES; HYDROLYSIS; MORPHOLOGY; POLYPROPYLENE
Issue Date
2012-11
Publisher
POLYMER SOC KOREA, ROOM 601, HATCHON BUILDING, 831 YEOKSAM-DONG, KANGNAM-KU, SEOUL 135-792, SOUTH KOREA
Citation
Macromolecular research, Vol.20 No.10 [2012], 1088-1095
Abstract
In this study, we investigated the effects of mesoporous titanium silicate (TS-1) zeolite on the melting behavior and isothermal crystallization in poly(butylene succinate) (PBS)/TS-1 zeolite hybrid composites (PTHC). Isothermal crystallization results revealed that TS-1 zeolite acted as a nucleation agent in PTHC, thus the t (1/2) of PTHC was faster than that of homo-PBS. However, the nucleation effect of TS-1zeolite did not depend on the TS-1 zeolite content. The large surface area of the mesoporous structure readily formed molecular chains inside and outside of the pore mouths of TS-1 zeolite, covering the nucleation site, as a result of the byproduct deposition during polymerization. At isothermal crystallization, temperatures ranging from 88 to 92 A degrees C, nucleation of TS-1 zeolite occurred because of the presence of free byproducts and the formation of a molecular chain in the pore mouths. In contrast, isothermal temperatures ranging from 80 to 84 A degrees C resulted in ineffective nucleus activation because of the steric hindrance in the porous structure. Synchrotron small-angle X-ray scattering (SAXS) analysis revealed that TS-1 zeolite can accelerate lamellar recrystallization during heating.
URI
https://link.springer.com/article/10.1007%2Fs13233-012-0160-9http://hdl.handle.net/20.500.11754/42995
ISSN
1598-5032
DOI
10.1007/s13233-012-0160-9
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ORGANIC AND NANO ENGINEERING(유기나노공학과) > Articles
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