Results 21 to 30 of about 151,077 (328)

Fully bio-based aromatic–aliphatic copolyesters: poly(butylene furandicarboxylate-co-succinate)s obtained by ring opening polymerization [PDF]

open access: yes, 2017
Poly(butylene 2,5-furandicarboxylate-co-succinate) copolyesters (coPBFxSy) have been synthesized by ring opening polymerization (ROP). Cyclic butylene 2,5-furandicarboxylate and butylene succinate oligomer mixtures, to be used as monomers for ROP, were
Batista Ciulik, Claudio   +3 more
core   +2 more sources

Effects of microplastics in freshwater fishes health and the implications for human health [PDF]

open access: yesBrazilian Journal of Biology, 2023
The presence of microplastics in aquatic environments has raised concerns about their abundance and potential hazards to aquatic organisms. This review provides insight into the problem that may be of alarm for freshwater fish.
M. L. Khan   +11 more
doaj   +1 more source

Tuning the Properties of Furandicarboxylic Acid-Based Polyesters with Copolymerization: A Review

open access: yesPolymers, 2020
Polyesters based on 2,5-furandicarboxylic acid (FDCA) are a new class of biobased polymers with enormous interest, both from a scientific and industrial perspective.
Z. Terzopoulou   +5 more
semanticscholar   +1 more source

Aliphatic Diacidic Long-Chain C16 Polyesters from 10,16-Dihydroxyhexadecanoic Acid Obtained from Tomato Residual Wastes

open access: yesMolecules, 2019
10,16-dihydroxyhexadecanoic acid obtained from agroresidual tomato waste, was oxidized to produce 7-oxohexadecanedioic acid in good yield (>70%) and purified without oxidation side products in one step.
Daniel Arrieta-Baez   +4 more
doaj   +1 more source

HET acid based oligoesters – TGA/FTIR studies [PDF]

open access: yes, 2008
One of the important reactive halogenated dicarboxylic acids used in the synthesis of flame retardant unsaturated polyester resins is 1,4,5,6,7,7-hexachlorobicyclo [2.2.1] hept-5-ene-2,3-dicarboxylic acid (HET acid).
Rajkumar, Thangamani   +3 more
core   +2 more sources

Preparation of Polyester-Based Metal-Cross Linked Polymeric Composites as Novel Materials Resistant to Bacterial Adhesion and Biofilm Formation

open access: yesMolecules, 2011
Bacterial biofilms constitute an extremely resistant form of bacterial colonization with dire health and economical implications. Towards achieving polymeric composites capable of resisting bacterial adhesion and biofilm formation, we prepared five 2,6 ...
Mutasem O. Taha   +4 more
doaj   +1 more source

Pivalolactone, 1 interchange reactions with polypivalolactone [PDF]

open access: yes, 1993
Ester interchange, alcoholysis, and acidolysis of polypivalolactone (PPVL) were studied by melting PPVL with bisphenol diacetates, 1, 4-butanediol, or aromatic diacids.
Bantjes, Adriaan   +3 more
core   +2 more sources

Functional Polymers and Polymeric Materials From Renewable Alpha-Unsaturated Gamma-Butyrolactones

open access: yesFrontiers in Chemistry, 2019
Sustainable chemistry requires application of green processes and often starting materials originate from renewable resources. Biomass-derived monomers based on five-membered γ-butyrolactone ring represent suitable candidates to replace sources of fossil
Jozef Kollár   +4 more
doaj   +1 more source

Effect of hydroxyapatite nanoparticles on the degradability of random poly(butylene terephthalate-co-aliphatic dicarboxylate)s having a high content of terephthalic units [PDF]

open access: yes, 2016
Copolyesters derived from 1,4-butanediol and constituted also of aliphatic and aromatic dicarboxylate units in a molar ratio of 3:7 were synthesized by a two-step polycondensation procedure.
Faramarz Afshar Taromi, Faramarz Afshar   +5 more
core   +2 more sources

Controlling the isothermal crystallization of isodimorphic PBS-ran-PCL random copolymers by varying composition and supercooling [PDF]

open access: yes, 2020
In this work, we study for the first time, the isothermal crystallization behavior of isodimorphic random poly(butylene succinate)-ran-poly(e-caprolactone) copolyesters, PBS-ran-PCL, previously synthesized by us.
Martínez de Ilarduya Sáez de Asteasu, Domingo Antxon   +5 more
core   +2 more sources

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