Results 71 to 80 of about 52,519 (200)

INFLUENCE OF THE SIZE OF METHYLENE SPACERS ON THE THERMAL BEHAVIOR OF SEVERAL ALIPHATIC-AROMATIC POLYESTERS

Scientific Study & Research: Chemistry & Chemical Engineering, Biotechnology, Food Industry, 2014
Polyesters have a wide range of technical applications and therefore their processing is of the utmost importance. Since polyesters are usually processed by melting, their thermal stability is an extremely important characteristic for the exact ...
NATALIA HURDUC, GABRIELA LISA, VIOLETA TOADER   +2 more
doaj  

Flame resistant elastic elastomeric fibers [PDF]

, 1972
Development of materials to improve flame resistance of elastic elastomeric fibers is discussed. Two approaches, synthesis of polyether based urethanes and modification of synthesized urethanes with flame ratardant additives, are described.
Howarth, J. T., Massucco, A. A.
core   +1 more source

Photo-oxidative and soil burial degradation of irrigation tubes based on biodegradable polymer blends [PDF]

, 2019
Irrigation tubes based on biodegradable polymers were prepared via an extrusion-drawing process by Irritec and compared to conventional pipes made of high-density polyethylene (HDPE).
Ceraulo M., Giuffre C., La Mantia F. P., Mistretta M. C., Pellegrino R., Rapisarda M., Rizzarelli P., Valenti G.   +7 more
core   +1 more source

Producing Polycaprolactone and Basil Seed Gum Nanofibers Using an Electrospinning Process [PDF]

Journal of Food Quality and Hazards Control
Background: Novel packaging materials often exhibit enhanced environmental sustainability, safety, and biodegradability compared to conventional plastics.
N. Zamani, A. Farsad-Naeimi, E. Sharifi, V. Ghasemzadeh-Mohammadi   +3 more
doaj  

The Lewis Pair Polymerization of Lactones Using Metal Halides and N-Heterocyclic Olefins: Theoretical Insights

Molecules, 2018
Lewis pair polymerization employing N-Heterocyclic olefins (NHOs) and simple metal halides as co-catalysts has emerged as a useful tool to polymerize diverse lactones. To elucidate some of the mechanistic aspects that remain unclear to date and to better
Jan Meisner, Johannes Karwounopoulos, Patrick Walther, Johannes Kästner, Stefan Naumann   +4 more
doaj   +1 more source

Concept of Recycling‐on‐Demand Investigated on Linear Poly(Ester‐Co‐Acetal)s

Macromolecular Materials and Engineering
Effective recycling of polymers into valuable resources is the basis for establishing a circular economy. Whereas mechanical recycling often leads to downcycling, the concept of recycling‐on‐demand (ROD) has high promise.
Florian Cramer, Pauline Shamraienko, Brigitte Voit   +2 more
doaj   +1 more source

Fluoride-Promoted Esterification (FPE) Chemistry: A Robust Route to Bis-MPA Dendrons and Their Postfunctionalization

Molecules, 2016
Bifunctional dendrons based on 2,2-bis(methylol)propionic acid (bis-MPA) are highly desirable scaffolds for biomedical applications. This is due to their flawless nature and large and exact number of functional groups as well as being biodegradable and ...
Patrik Stenström, Oliver C. J. Andrén, Michael Malkoch   +2 more
doaj   +1 more source

Effects of alkylene spacer length of 2-pyrone-4,6-dicarboxylic acid polyesters on biodegradability and metal adhesive properties

NPG Asia Materials
2-Pyrone-4,6-dicarboxylic acid (PDC) is a lignin-derived biometabolic intermediate that can be produced on a large scale by using transforming bacteria and can be directly polymerized by polycondensation with diols to produce biomass polyesters.
Yijie Jin, Keiju Yoshida, Suzuha Kimura, Atsushi Isobe, Keiichi Kuboyama, Masaya Fujita, Takuma Araki, Yuzo Suzuki, Yuichiro Otsuka, Naofumi Kamimura, Eiji Masai, Masaya Nakamura, Tsuyoshi Michinobu   +12 more
doaj   +1 more source

Design and Applications of Biodegradable Polyester Tissue Scaffolds Based on Endogenous Monomers Found in Human Metabolism

Molecules, 2009
Synthetic polyesters have deeply impacted various biomedical and engineering fields, such as tissue scaffolding and therapeutic delivery. Currently, many applications involving polyesters are being explored with polymers derived from monomers that are ...
Devin G. Barrett, Muhammad N. Yousaf
doaj   +1 more source

The sutures in dentistry [PDF]

, 2009
In oral surgery, the last phase of a surgical operation is represented by the tissues suture, that allows the wound lips edges approximation and their stabilization, to promote haemostasis, to avoid the alimentary residues accumulation on the incision ...
A. Dolci, F. Minozzi, GALLI, Massimo, P. Bollero, V. Unfer   +4 more
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