Results 31 to 40 of about 702,080 (289)

An improved method for the high isotacticity measurement of polybutene-1

open access: yesPolymer Testing, 2021
High isotactic polybutene-1 (HiPB) plays important roles in presenting outstanding resistance to creep and crack at high temperature. Therefore, rapid and accurate measurement of the HiPB is extremely important for both synthesis and application of ...
Weiping Zheng   +4 more
doaj   +1 more source

Synthesis and Characterization of Vinyl Acetate and Dibutyl Maleate Copolymers by Reverse Iodine Transfer Radical Polymerization [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2015
Homopolymerization and copolymerization of vinyl acetate (VAc) and dibutyl maleate (DBM) were performed in bulk in the presence of iodine as a chain azobis(isobutyronitrile) (AIBN) as an transfer agent generator and 2,2initiator at 70°C.
Mojtaba Farrokhi Farrokhi   +1 more
doaj   +1 more source

Accelerated crystallization and crystal-crystal transition of PB induced by PP with optimized content

open access: yesPolymer Testing, 2023
Isotactic polybutene-1 (PB)/isotactic polypropylene (PP) blends, typical crystalline/crystalline polymer blends with low-melting-temperature (Tm) PB and high-Tm PP, exhibit complicated interactions between their components in both molten and solid states.
Xiangjie Yan   +5 more
doaj   +1 more source

Competitive particle growth at different conditions of oligo-micelle formation in hydro-alcoholic solution of anionic double-chain emulsifier via batch emulsion polymerization of vinyl chloride [PDF]

open access: yesPolyolefins Journal, 2019
The condition of oligo-micelle formation of sodium di-isodecyl sulfosuccinate (SDIDS) emulsifier in hydroalcoholic solutions is used to study particle formation of vinyl chloride emulsion polymerization in a batch reactor.
Aliasghar Mahdavi Akerdi   +1 more
doaj   +1 more source

The ring-opening polymerization of D,L-lactide in the melt initiated with tetraphenyltin [PDF]

open access: yes, 1984
Melt polymerization conditions for D,L-lactide initiated with tetraphenyltin were studied with regard to polymer molecular weight and weight distributions.
Berg, J.W.A. van den   +3 more
core   +2 more sources

مروری بر کامپوزیت‌های پلیمر-سیلسزکیوکسان اولیگومری چندوجهی [PDF]

open access: yesBaspārish, 2017
در سال‌های اخیر، کامپوزیت‌های پلیمری با نانوذرات سیلسزکیوکسان اولیگومری چندوجهی (POSS) بسیار مطالعه شده‌اند. ابعاد نانومتری و نیز امکان وجود گروه‌های عاملی مختلف در ساختار این نانوذرات باعث شده است تا کامپوزیت‌های ساخته شده از آن‌ها، دارای خواص منحصربه ...
منصوره زارع زاده مهریزی   +3 more
doaj   +1 more source

Click polymerization [PDF]

open access: yesChemical Society Reviews, 2010
The development of new polymerization reactions is of critical importance to macromolecule science. In this critical review, we summarize the research efforts to incubate alkyne-azide click reactions into a versatile polymerization technique for the synthesis of poly(triazole)s (PTAs) with linear and hyperbranched structures.
Qin, Anjun   +2 more
openaire   +3 more sources

Polymerization of Ethylene Using α-Diimine Nickel Catalyst [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2013
The late transition metal catalysts based on end group of transition metals in the periodic table like Ni, Fe, Co, Pd, Pt were developed rapidly in polyolefin industrial productions.
Hassan Arabi1   +4 more
doaj   +1 more source

Predicting multidimensional distributive properties of hyperbranched polymer resulting from AB2 polymerization with substitution, cyclization and shielding [PDF]

open access: yes, 2013
A deterministic mathematical model for the polymerization of hyperbranched molecules accounting for substitution, cyclization, and shielding effect has been developed as a system of nonlinear population balances.
Iedema, Piet D., Kryven, Ivan
core   +5 more sources

Introduction: Polymerization [PDF]

open access: yesProceedings of the National Academy of Sciences, 2006
The Oxford English Dictionary defines polymer in its broadest sense as “a substance with a molecular structure formed from many identical small molecules bonded together.” Polymers, in their many diverse forms, are the remarkable materials constituting the essential “stuff” from which everything, from living organisms to computer components to common ...
openaire   +2 more sources

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