| Title: |
Synchrotron X-ray scattering studies on the structural evolution of microbial poly(3-hydroxy-butyrate) |
| Authors: |
Heo, K; Yoon, J; Jin, KS; Jin, S; Kim, G; Sato, H; Ozaki, Y; Satkowski, MM; Noda, I; Ree, M |
| Contributors: |
화학과; 10115761; Ree, M |
| Publisher Information: |
BLACKWELL PUBLISHING |
| Publication Year: |
2007 |
| Collection: |
Pohang University of Science and Technology (POSTECH): Open Access System for Information Sharing (OASIS) |
| Subject Terms: |
SMALL-ANGLE SCATTERING; TIME-RESOLVED SAXS; SECONDARY CRYSTALLIZATION; INFRARED-SPECTROSCOPY; MORPHOLOGICAL-CHANGES; THERMAL-BEHAVIOR; 2-PHASE SYSTEMS; COPOLYMERS; POLY(ETHYLENE-TEREPHTHALATE); POLYETHYLENE |
| Description: |
The crystallization behavior of microbially synthesized poly(3-hydroxybutyrate) was studied in detail using time-resolved small-angle X-ray scattering. This polyester was found to undergo primary crystallization as well as secondary crystallization. In the primary crystallization, the thicknesses of the lamellar crystals were sensitive to the crystallization temperature, but no thickening was observed throughout the entire crystallization at a given temperature. The thickness of the lamellar crystals in the polyester was always larger than that of the amorphous layers. Secondary crystallization favorably occurred during the later stage of isothermal crystallization in competition with the continuous primary crystallization, forming secondary crystals in amorphous regions, in particular in the amorphous layers between the primarily formed lamellar crystal stacks. Compared to the primarily formed lamellar crystals, the secondary crystals had short-range-ordered structures of smaller size, a broader size distribution, and a lower electron density. ; open ; 1 ; 1 ; 13 ; scie ; scopus |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| Relation: |
JOURNAL OF APPLIED CRYSTALLOGRAPHY; 40; SCI급, SCOPUS 등재논문; SCI; Chemistry, Multidisciplinary; Crystallography; Chemistry; https://oasis.postech.ac.kr/handle/2014.oak/10428; 7345; 000246059800121 |
| DOI: |
10.1107/S0021889807000878 |
| Availability: |
https://oasis.postech.ac.kr/handle/2014.oak/10428; https://doi.org/10.1107/S0021889807000878 |
| Rights: |
BY_NC_ND ; http://creativecommons.org/licenses/by-nc-nd/2.0/kr |
| Accession Number: |
edsbas.FFAABC0 |
| Database: |
BASE |