TY - JOUR
T1 - Crystallization behaviors of poly[(R)-3-hydroxybutyrate-co-4-hydroxybutyrate]/poly(ethylene glycol) graft TEMPO-oxidized cellulose nanofiber blends
AU - Zhang, Jiaqi
AU - Fujizawa, Shuji
AU - Isogai, Akira
AU - Hikima, Takaaki
AU - Takata, Masaki
AU - Iwata, Tadahisa
N1 - Publisher Copyright:
© 2014 Elsevier Ltd.
PY - 2014/12
Y1 - 2014/12
N2 - To accelerate the crystallization rate of poly[(R)-3-hydroxybutyrate-co-4-hydroxybutyrate] [P(3HB-co-4HB)] that is a microbial and biodegradable polyester, poly(ethylene glycol) graft TEMPO-oxidized cellulose nanofiber (PEG-TOCN) was blended as a nucleating agent. The PEG was only blended and confirmed the effect on the difference between PEG-TOCN and PEG in all samples. The non-isothermal crystallization and isothermal crystallization behaviors of P(3HB-co-4HB) with three kinds of different 4HB contents blended with PEG-TOCN or PEG were investigated by differential scanning calorimeter, wide-angle X-ray diffraction, polarizing microscope and tensile test. The crystallization half time (t1/2) was drastically decreased by blended with PEG-TOCN, indicating that the crystallization rate was accelerated in all cases. The POM images showed that the PEG-TOCN worked effectively to increase both the growth rate and amounts of spherulites of P(3HB-co-4HB). In addition, the crystallinity of PEG-TOCN blending samples was higher than that of non-blended samples in all cases.
AB - To accelerate the crystallization rate of poly[(R)-3-hydroxybutyrate-co-4-hydroxybutyrate] [P(3HB-co-4HB)] that is a microbial and biodegradable polyester, poly(ethylene glycol) graft TEMPO-oxidized cellulose nanofiber (PEG-TOCN) was blended as a nucleating agent. The PEG was only blended and confirmed the effect on the difference between PEG-TOCN and PEG in all samples. The non-isothermal crystallization and isothermal crystallization behaviors of P(3HB-co-4HB) with three kinds of different 4HB contents blended with PEG-TOCN or PEG were investigated by differential scanning calorimeter, wide-angle X-ray diffraction, polarizing microscope and tensile test. The crystallization half time (t1/2) was drastically decreased by blended with PEG-TOCN, indicating that the crystallization rate was accelerated in all cases. The POM images showed that the PEG-TOCN worked effectively to increase both the growth rate and amounts of spherulites of P(3HB-co-4HB). In addition, the crystallinity of PEG-TOCN blending samples was higher than that of non-blended samples in all cases.
KW - Crystallization behavior
KW - Crystallization half-time
KW - Nucleating agent
KW - P(3HB-co-4HB)
KW - PEG-TOCN
UR - http://www.scopus.com/inward/record.url?scp=84912525739&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84912525739&partnerID=8YFLogxK
U2 - 10.1016/j.polymdegradstab.2014.09.022
DO - 10.1016/j.polymdegradstab.2014.09.022
M3 - Article
AN - SCOPUS:84912525739
SN - 0141-3910
VL - 110
SP - 529
EP - 536
JO - Polymer Degradation and Stability
JF - Polymer Degradation and Stability
ER -