Results 191 to 200 of about 8,286 (219)

Particular thermal properties of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) oligomers

Journal of Polymer Research, 2011
Telechelic hydroxylated poly(3-hydroxybutyrate-co-3-hydroxyvalerate)s (PHBV-diols) were synthesized by transesterification with ethylene glycol, which could be used as the macromonomers for synthesis of block copolymers. PHBV-diols owned particular thermal properties. PHBV-diols had much lower the melting temperatures (T
Qingsheng Liu, Tien-Wei Shyr, Chia-Hsin Tung, Zhanhua Liu, Guifang Shan, Meifang Zhu, Bingyao Deng   +6 more
openaire   +1 more source

Synthesis of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) from activated sludge

Biotechnology Letters, 1997
Poly-3-hydroxybutyrate (PHB) and poly(3-hydroxybutyrate- co-3-hydroxyvalerate) (PHBV) was produced using a co-culture of activated sludge. When butyric acid was used as sole carbon source, PHB was produced. When valeric acid was added to the medium, PHBV was produced.
W.F. Hu, H. Chua, P.H.F. Yu
openaire   +1 more source

Biodegradability of poly (3-hydroxybutyrate-co-3-hydroxyvalerate) in activated sludge

Chemosphere, 1992
Abstract The biodegradability of microbial copolyester of 3-hydroxybutyrate and 3-hydroxyvalerate, P(3HB-co-3HV), in activated sludge was studied by MITI test method to examine the applicability of the test to biodegradable plastics. The biodegradability after 28 days was 88% under standard condition and did not vary with the particle size of test ...
Yoshikuni Yakabe, Emiko Mori, Takaharu Hara, Kazuo Nohara   +3 more
openaire   +1 more source

Enzymatic degradation of blends containing poly(3-hydroxybutyrate-co-3-hydroxyvalerate)

Polymer Degradation and Stability, 1994
The enzymatic degradation of blends of poly(β-hydroxybutyrate-co-16% β-hydroxyvalerate) with polystyrene, and styrene-acrylonitrile copolymers was studied. Degradation has been measured by weight loss after exposures to the extracellular depolymerase from Penicillium funiculosum.
S.P. McCarthy, P. Dave, T. Jahedi, D. Eberiel, R. Gross   +4 more
openaire   +1 more source

Modified poly(3-hydroxybutyrate-co-3-hydroxyvalerate) using hydrogen bonding monomers

Polymer, 2004
Properties of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) were significantly modified by a hydrogen bonding (H-bond) monomer-bisphenol A (BPA). BPA lowered the T-m of PHBV and widened the heat-processing window of PHBV. At the same time, a dynamic H-bond network in the blends was observed indicating that BPA acted as a physical cross-link agent.
Fei, B., Chen, C., Wu, H., Peng, S., Wang, X., Dong, L., Xin, J.H.   +6 more
openaire   +1 more source

Biosynthesis of poly(3-hydroxybutyrate- co -3-hydroxyvalerate) by Halogeometricum borinquense strain E3

International Journal of Biological Macromolecules, 2015
Polyhydroxyalkanoates (PHA's) can be a key solution for pollution problems caused by plastics derived from petrochemical sources. Extremely halophilic archaeon Halogeometricum borinquense strain E3 showed maximum PHA accumulation of 73.51 ±1.7% (wt/wt) of cell dry weight (CDW) with 2% glucose.
Bhakti B, Salgaonkar, Judith M, Bragança   +1 more
openaire   +2 more sources

Miscibility of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) and poly(vinyl chloride) blends

Polymer, 1995
Abstract The miscibility behaviour of biodegradable poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHB-HV) blended with poly(vinyl chloride) (PVC) was investigated by using differential scanning calorimetry, dynamic mechanical thermal analysis, Fourier-transform infra-red spectroscopy and a mechanical testing system. A blend of PHB-HV containing 8% HV
Soonja Choe, Yoon-Jong Cha, Han-Sup Lee, Jin San Yoon, Hyoung Jin Choi   +4 more
openaire   +1 more source

Roles of mRNA poly(A) tails in regulation of eukaryotic gene expression

Nature Reviews Molecular Cell Biology, 2021
Lori Anne Passmore, Jeff Coller
exaly  

Poly(ADP-ribose) polymerase inhibition: past, present and future

Nature Reviews Drug Discovery, 2020
Nicola J Curtin, Csaba Szabo
exaly  

Poly(N-isopropylacrylamide)-based smart hydrogels: Design, properties and applications

Progress in Materials Science, 2021
Ling Wang, Xiao Yang, Yiyu Feng
exaly