نتایج جستجو برای: polyisoprene cis

تعداد نتایج: 43357  

Journal: :Macromolecular Theory and Simulations 2021

A framework to self-consistently combine a classical equation of state (EoS) and molecular force field model polymers polymer mixtures is presented. The statistical associating fluid theory (SAFT- γ Mie) used correlate the thermophysical properties oligomers generate robust transferrable coarse-grained (CG) parameters which can be both in particle based simulations equations calculations. Examp...

2017
Wolf Röther Jakob Birke Stephanie Grond Jose Manuel Beltran Dieter Jendrossek

In this study, we show the proof of concept for the production of defined oligo-isoprenoids with terminal functional groups that can be used as starting materials for various purposes including the synthesis of isoprenoid-based plastics. To this end, we used three types of rubber oxygenases for the enzymatic cleavage of rubber [poly(cis-1,4-isoprene)]. Two enzymes, rubber oxygenase RoxAXsp and ...

Journal: :Applied and environmental microbiology 2017
Jakob Birke Wolf Röther Dieter Jendrossek

Only two types of rubber oxygenases, rubber oxygenase (RoxA) and latex clearing protein (Lcp), have been described so far. RoxA proteins (RoxAs) are c-type cytochromes of ≈70 kDa produced by Gram-negative rubber-degrading bacteria, and they cleave polyisoprene into 12-oxo-4,8-dimethyltrideca-4,8-diene-1-al (ODTD), a C15 oligo-isoprenoid, as the major end product. Lcps are common among Gram-posi...

2015
Gakuji Tsukada Ryuzo Kato Masayuki Tokuda Yoshihiro Nishitani Wei Min Huang

In dentistry, pure gutta-percha (trans-1,4-polyisoprene (TPI)) is widely used as a main component of root canal filling materials. TPI has an interesting shape memory formed through cross-linking, and this characteristic is expected to be very effective for development of novel dental treatments; in particular, modification of the shape recovery temperature to the intraoral temperature (37 ̋C) ...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 2007
Takeshi Bamba Tomoki Sando Asuka Miyabashira Koichiro Gyokusen Yoshihisa Nakazawa Yinquan Su Eiichiro Fukusaki Akio Kobayashi

Periploca sepium Bunge (Chinese silk vine) is a woody climbing vine belonging to the family Asclepiadaceae. It originally comes from Northwest China. Periploca resembles the Para-rubber tree, Hevea brasiliensis, regarding a similar body plan to produce a milky exudate containing rubber latex. The Periploca plant was assessed as a rubber-producing plant by rubber structure elucidation and its mo...

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