A Synchrotron in situ X-ray Study on the Multiple Melting Behaviors of Isomorphous Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (P(HB-co-HV)) with Middle HV Content

Zhu, Hao; Lv, You; Shi, Dan; Li, Yiguo; Miao, Weijun; Wang, Zongbao

doi:10.1007/s10118-020-2427-5

Cited by 4 publications

(1 citation statement)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It should be pointed out that the thinner uniform lamellae with HV unit exclusion melt first, and the thicker sandwich lamellae with HV unit partial inclusion melt later. 39,40 From Figure 3 and Table 1, it can be seen that the addition of SC leads to an upward trend in the crystallinity of the nanocomposite, and the crystallinity increases significantly with the SC content, which is attributed to the role of SC in promoting crystallization. As can be seen from the cooling crystallization process in Figure 3b, T c and crystallinity of cooling increase significantly after the addition of SC, from 70.5 °C to around 91.5 °C and from 50.0% to around 69.9%, respectively.…”

Section: ■ Results and Discussionmentioning

confidence: 97%

Synthetic Celluloses as Green Fillers for the Enhancement of the Crystallization and Mechanical Properties of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)

Fang

Wang

Miao

et al. 2022

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

Enzymatically synthetic cellulose is a novel green filler combining the advantage of degradability and environmental friendliness. In this work, poly(3-hydroxybutyrate-co-3-hydroxyvalerate) [P(HB-co-HV)] nanocomposites were fabricated using the melt blending technique through the addition of slatted cellulose (SC) or disc-shaped cellulose (DC). The effects of different morphologies and weight contents of cellulose on the crystallization behavior, morphology, and interaction of P(HB-co-HV) nanocomposites were investigated and analyzed. Compared with neat P(HB-co-HV), the yield strength and elongation at break of P(HB-co-HV)/0.1 wt %-SC nanocomposites were increased by 29 and 79%, respectively, while those for P(HB-co-HV)/0.5 wt %-DC nanocomposites were increased by 34 and 59%, respectively. Differential scanning calorimetry and polarized optical microscopy results demonstrated that cellulose increased the crystallization temperature and decreased the spherulite size of P(HB-co-HV). Wide-angle X-ray diffraction results illustrated that the growth of the grain and crystal plane was affected by cellulose. Fourier transform infrared spectroscopy results indicated that strong hydrogen bonds were formed at the interface between P(HB-co-HV) and cellulose. Scanning electron microscopy images revealed the uniform dispersion of cellulose in the polymer matrix. This study entails considerable advantages for the preparation of green nanofillers and the production of biodegradable polymers with excellent mechanical properties for tissue engineering in the presence of small amounts of fillers.

show abstract

Section: ■ Results and Discussionmentioning

confidence: 97%