Results 51 to 60 of about 7,296 (274)

Effect of Palmitic Acid in the Acceleration of Polyethylene Biodegradation by Aspergillus oryzae

open access: yesJournal of Pure and Applied Microbiology, 2018
The biodegradation of High Density Polyethylene (HDPE) and Low Density Polyethylene (LDPE) by Aspergillus oryzae was examined in the current study. The optimal temperature, pH, favorable carbon and nitrogen sources for organism growth were determined ...
Vijayasree Jayaprakash   +1 more
doaj   +1 more source

Rethinking plastic waste: innovations in enzymatic breakdown of oil‐based polyesters and bioplastics

open access: yesFEBS Open Bio, EarlyView.
Plastic pollution remains a critical environmental challenge, and current mechanical and chemical recycling methods are insufficient to achieve a fully circular economy. This review highlights recent breakthroughs in the enzymatic depolymerization of both oil‐derived polyesters and bioplastics, including high‐throughput protein engineering, de novo ...
Elena Rosini   +2 more
wiley   +1 more source

Sustainable bioplastics manufacturing from renewable sources

open access: yesFEBS Open Bio, EarlyView.
Bioplastics are manufactured by using polymers from different bio‐based sources. These novel materials not only offer biodegradability but also possess various functional properties that make them suitable for diverse applications. Recent developments in the preparation of bioplastics are reported, highlighting the distinct properties of each type of ...
C. Valeria L. Giosafatto   +6 more
wiley   +1 more source

Effectiveness of Vitamin-E-Doped Polyethylene in Joint Replacement: A Literature Review

open access: yesJournal of Functional Biomaterials, 2015
Since polyethylene is one of the most frequently used biomaterials, such as in bearing components in joint arthroplasty, strong efforts have been made to improve the design and material properties over the last decades.
Antonio Gigante   +3 more
doaj   +1 more source

Correlation between Microstructure and Rheological Properties of Broad Molecular Weight Distribution High Density Polyethylenes [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2015
In this article, the correlation between molecular microstructure and rheological behavior for three different grades of high density polyethylene with broad molecular weight distribution have been investigated.
Mohammad Javad Shirkavand   +4 more
doaj   +1 more source

Improved wear performance of ultra high molecular weight polyethylene coated with hydrogenated diamond like carbon [PDF]

open access: yes, 2010
Hydrogenated diamond like carbon (DLCH) thin films were deposited on medical grade ultra high molecular weight polyethylene (UHMWPE) by radio frequency plasma enhanced chemical vapor deposition. The DLCH coating thicknesses ranged from 250 to 700.
López Santos, Carmen   +6 more
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

Academic Rheology and Industrial Rheology

open access: yesApplied Rheology, 1999
This paper is an attempt to highlight the problems faced by industrial rheologists. The problems are far more complex than subjects of usual academic pursuit.
Nakajima Nobuyuki
doaj   +1 more source

Impact resistance of thermoplastics - Prediction from bulk properties [PDF]

open access: yes, 2000
Published ...
Hazra, S, Hillmansen, S, Leevers, PS
core   +1 more source

Chain-Extended Polyethylene [PDF]

open access: yesPolymer Journal, 1987
The current status of high-strength/high-modulus polyethylene fibres is reviewed with the emphasis on fundamental aspects of ultra-drawing and processability. The drawing mechanism as well as the temperature dependence of the drawability of UHMW-PE (ultra-high-molecular-weight polyethylene) will be discussed.
Lemstra, P.J.   +2 more
openaire   +1 more source

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