Hydrolytic degradable PBT/PEG copolymer was synthesized by macromolecular transesterification method from PBT and PEG macromonomers. The resultant copolymers were characterized by (1)H-NMR and GPC. The non-isothermal crystallization behavior of these copolymers was studied by differential scanning calorimetry (DSC). The water absorption and hydrolytic degradation behavior of PBT/PEG copolymers were also studied in detail.
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http://dx.doi.org/10.1007/s10856-007-2004-2 | DOI Listing |
Int J Biol Macromol
December 2024
Guangdong Engineering Research Center of High-Value Utilization and Equipment Development of Marine Biological Resources, Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, Guangdong, 511458, China. Electronic address:
Int J Biol Macromol
December 2024
College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology, Tianjin 300457, China. Electronic address:
Polylactic acid (PLA) has been a subject of considerable interest as a degradable polymer. However, the degradation process is slow and uncontrollable. In this work, controlled degradable PLA/bio-based GEL (pectin/α-cellulose/SiO/CaCl) hydrophilic plasticizer composite material was successfully prepared by solution blending process.
View Article and Find Full Text PDFJ Agric Food Chem
December 2024
Department of Biotechnology, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu-shi, Toyama 939-0398, Japan.
Piceatannol, a stilbene compound, undergoes a comprehensive phase II metabolism mediated by UDP-glucuronosyltransferases (UGTs) and sulfotransferases (SULTs) in humans. Despite their well-documented beneficial effects on health, their detailed pharmacokinetic fate, including the metabolite structure and properties, is poorly understood. Thus, we determined the structure of seven glucuronides and six sulfates transformed from piceatannol and its methylated derivatives in recombinant yeast cells expressing UGTs or SULTs.
View Article and Find Full Text PDFInt J Biol Macromol
December 2024
Biochemistry and Biomaterials Research Laboratory, Department of Chemistry, Faculty of Arts and Sciences, İnönü University, 44280 Malatya, Türkiye.
Chitosan/oxidized cellulose blended film with Tribulus terrestris (T. terrestris) extract films were successfully produced by casting method. The obtained blend films were characterized by structural, mechanical, optical, permeation, antioxidant, and antimicrobial properties.
View Article and Find Full Text PDFRSC Chem Biol
December 2024
Delft University of Technology, Department of Biotechnology Delft The Netherlands
Members of the genus are commonly found in natural aquatic ecosystems. However, they are also frequently present in non-chlorinated drinking water distribution systems. High densities of these bacteria indicate favorable conditions for microbial regrowth, which is considered undesirable.
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