Results 51 to 60 of about 280 (152)
Polyesterase activity and thermostability of carboxylesterases from Thermoleophilum album YS‐3
The FEBS Journal, Volume 293, Issue 15, Page 4724-4743, August 2026.Three novel α/β‐hydrolases from thermophilic bacterium Thermoleophilum album display carboxylesterase and polyesterase activity. These enzymes hydrolyse PET, PLA and PCL both at high and moderate temperatures. TA21 shows superior activity, efficiently converting MHET to terephthalic acid. Structural features underlying substrate binding highlight their
Tatyana N. Chernikova +6 more
wiley +1 more source
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
The Effects of Microplastics and Additives on Ecosystem Function, Structure, and Signaling
Global Change Biology, Volume 32, Issue 8, August 2026.Microplastics disrupt ecosystem signaling through olfactory traps, altering predator–prey signaling and disrupting microbial communication and quorum sensing. ABSTRACT Microplastics (MPs) and their associated chemical additives are pervasive contaminants whose ecological impacts extend beyond organismal toxicity to fundamentally alter ecosystem ...
Sally Gaw +2 more
wiley +1 more source
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
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
openaire +3 more sources
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