Results 61 to 70 of about 862 (177)
Polímeros, 2013 Neste trabalho investigou-se o efeito de poliisobutenos (PIB´s), de massas molares variando de 480 a 1.600 g/mol, no polipropileno isotático. Composições contendo até 7% dos PIB´s foram preparadas em misturador interno e corpos de prova foram ...
Uédson Alexandre do Nascimento +2 more
doaj
Chinese Journal of Polymer Science, 2018 In this work, the crystallization of immiscible polypropylene (PP)/polybutene-1 (PB) blends, in particular the effect of crystal morphology of PP (HTC, high Tm component) on the subsequent crystallization behavior of PB (LTC, low Tm component) was studied.
Yao Xu +3 more
openaire +2 more sources
Microstructure and Tensile Properties of Melt-Spun Filaments of Polybutene-1 and Butene-1/Ethylene Copolymer. [PDF]
Polymers (Basel), 2023 Li J +11 more
europepmc +1 more source
Using terahertz spectroscopy for observing the kinetics of recrystallisation of polybutene-1
, 2013 This paper deals with the use of terahertz spectroscopy for observing the kinetics of recrystallisation of polybutene-1 as a suitable material for manufacturing optical elements in the terahertz region of the electromagnetic spectrum.
Křesálek, Vojtěch, Gavenda, Tomáš
core +1 more source
, 2013 Diplomová práce je zaměřena na strukturní vlastnosti isotaktického polybutenu-1. Zabývá se vlivem plniv na polymorfismus isotaktického polybutenu-1 a na přechod mezi krystalic-kými formami.
Chovanec, Tomáš
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Crystallinity and Stereoregularity of Polybutene-1
Kobunshi Kagaku, 1962 X線回折による結晶化度と密度とを主としてZieglem触媒により合成したポリブテン-1について測定した。結晶化度と比容積との間に直線関係が成立することから, 結晶質と非晶質の密度の値0.950および0, 868が得られた。アイソタクチックポリブテン-1には結晶化バンドとみなしうる吸収が多数見出された。一方, 1221cm-1バンドは固態状態ではその吸光度比の値が比容積と直線関係を示すが溶融状態や溶液で消失しない。したがって固態状態で一定の熱処理をした試料について比較するときには結晶化度の尺度として使用しうると考えられる。吸光度比 (A1221/A1151) と密度 (d) との間には次の実験式が成立する。
Atsuo Nishioka, Kazuo Yanagisawa
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The effect of electron irradiation on polybutene-1 and its ethylene copolymers [PDF]
, 2012 The beta irradiation, as one of several possibilities how to modify the polymer properties resulted in isotactic polybutene-1 (PB-1) and its random copolymers with ethylene (E) mainly in chain scission without chain cross-linking.
Hřibová, Martina +5 more
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The II-I Phase Transition Behavior of Butene-1 Copolymers with Hydroxyl Groups. [PDF]
Polymers (Basel), 2021 Li Y, Li T, Li W, Lou Y, Liu L, Ma Z.
europepmc +1 more source
Thermal-induced transformation of mechanical properties of polybutene-1
, 2015 The work directs attention towards the influence of annealing temperature on transformation of polymorphic composition and mechanical properties of isotactic polybutene-1 (PB-1).
Chvátalová, Lenka +3 more
core +1 more source