Results 31 to 40 of about 448,405 (337)

Wood polymer composites and their contribution to cascading utilisation [PDF]

open access: yes, 2015
Due to a shortage of resources and a growing competition of land use, sustainable and efficient resource utilisation becomes increasingly important.
Krause, Andreas   +4 more
core   +1 more source

Effect of Ca-P compound formed by hydrothermal treatment on biodegradation and biocompatibility of Mg-3Al-1Zn-1.5Ca alloy; in vitro and in vivo evaluation

open access: yesScientific Reports, 2017
Chemical combinations of Ca-P produced via plasma electrolytic oxidation (PEO) and a hydrothermal treatment were fabricated to improve the initial corrosion resistance and biocompatibility of a biodegradable Mg-3Al-1Zn-1.5Ca alloy.
Yu-Kyoung Kim   +5 more
doaj   +1 more source

Utilization of biodegradable wastes as a clean energy source in the developing countries: A case study in Myanmar [PDF]

open access: yes, 2018
Nowadays, waste-to-energy has become a type of renewable energy utilization that can provide environmental and economic benefits in the world. In this paper, we evaluated the quality of twelve biodegradable waste samples from Myanmar by binder laboratory
Juchelková, Dagmar   +3 more
core   +1 more source

Biodegradable hollow fibres for the controlled release of hormones [PDF]

open access: yes, 1987
Poly(l-lactide), (PLLA), hollow fibres were prepared using a dry-wet phase inversion spinning process. The effect of several spinning parameters (i.e. bore medium flow rate, spinning dope extrusion rate, fibre take-up rate, and spinning height) on the ...
Albers, J.H.M.   +5 more
core   +3 more sources

Improvement in Mechanical Properties and Heat Resistance of PLLA-b-PEG-b-PLLA by Melt Blending with PDLA-b-PEG-b-PDLA for Potential Use as High-Performance Bioplastics

open access: yesAdvances in Polymer Technology, 2019
Ecofriendly poly(L-lactide)-b-poly(ethylene glycol)-b-poly(L-lactide) (PLLA-b-PEG-b-PLLA) are flexible bioplastics. In this work, the blending of poly(D-lactide)-b-poly(ethylene glycol)-b-poly(D-lactide) (PDLA-b-PEG-b-PDLA) with various blend ratios for ...
Supasin Pasee, Yodthong Baimark
doaj   +1 more source

Mechanical properties and heat resistance of stereocomplex polylactide/copolyester blend films prepared by in situ melt blending followed with compression molding

open access: yesHeliyon, 2018
This work focuses on the process to obtain high heat-resistant stereocomplex polylactide (scPLA)/copolyester blend films by in situ melt blending of high molecular-weight poly(L-lactide) (PLLA), low molecular-weight poly(D-lactide) (PDLA) and copolyester
Yaowalak Srisuwan, Yodthong Baimark
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

Preparation of Polysaccharide-Based Microspheres by a Water-in-Oil Emulsion Solvent Diffusion Method for Drug Carriers

open access: yesInternational Journal of Polymer Science, 2013
Polysaccharide-based microspheres of chitosan, starch, and alginate were prepared by the water-in-oil emulsion solvent diffusion method for use as drug carriers. Blue dextran was used as a water-soluble biomacromolecular drug model.
Yodthong Baimark, Yaowalak Srisuwan
doaj   +1 more source

Compositions and medical devices for controlled release of nitric oxide and methods of production thereof [PDF]

open access: yes, 2015
The present disclosure describes compositions providing for controlled release of nitric oxide (NO) and methods for production of these compositions. In some embodiments, the compositions may include a biodegradable polymer and a nitric oxide-releasing ...
Balkus, Kenneth J., Jr., Liu, Harvey A.
core   +1 more source

Enzymatic degradation of biopolymers in amorphous and molten states: mechanisms and applications

open access: yesFEBS Open Bio, EarlyView.
This review explains how polymer morphology and thermal state shape enzymatic degradation pathways, comparing amorphous and molten biopolymer structures. By integrating structure–reactivity principles with insights from thermodynamics and enzyme engineering, it highlights mechanisms that enable efficient polymer breakdown.
Anđela Pustak, Aleksandra Maršavelski
wiley   +1 more source

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