Poly(butylene succinate) (PBS) is a bio-based and biodegradable polyester that can be used in numerous applications, ranging from clothing to food packaging the car industry biomedical sector (e.g., drug release systems). The conventional polymerization method of PBS requires presence metal-based transesterification catalysts titanium-based catalysts) high reaction temperatures (T > 150 °C)....

Synthesis of fluorinated chitin derivatives has been achieved using chitinase from Bacillus sp. as a catalyst. 6'-Fluoro- (1a), 6-fluoro- (1b) and 6,6'-difluoro- (1c) chitobiose oxazoline derivatives were newly prepared as TSAS monomers for chitinase. Ring-opening polyaddition of these monomers proceeded effectively at pH 8.0-9.0 and 30-40 degrees C, giving rise to alternatingly 6-fluorinated c...

The link between non-enzymatic RNA polymerization and RNA self-replication is a key step towards the "RNA world" and still far from being solved, despite extensive research. Clay minerals, lipids and, more recently, peptides were found to catalyze the non-enzymatic synthesis of RNA oligomers. Herein, a review of the main models for the formation of the first RNA polymers is presented in such a ...

A new approach has been developed to fabricate tough hybrid hydrogels by employing dual enzyme-mediated redox initiation to achieve post-self-assembly cross-linking polymerization. The resulting hydrogel combines the merits of supramolecular hydrogels with polymeric hydrogels to achieve higher mechanical strength and porous networks. Designed 3D constructs were fabricated via in situ 3D printin...

Soybean peroxidase (SBP) was used to catalyze the polymerization of phenols in room-temperature ionic liquids (RTILs). Phenolic polymers with number average molecular weights ranging from 1200 to 4100 D were obtained depending on the composition of the reaction medium and the nature of the phenol. Specifically, SBP was highly active in methylimidazolium-containing RTILs, including 1-butyl-3-met...

A one-pot, enzyme-catalyzed bulk polymerization method for direct production of highly branched polyesters has been developed as an alternative to currently used industrial procedures. Bio-based feed components in the form of glycerol, pentaerythritol, azelaic acid, and tall oil fatty acid (TOFA) were polymerized using an immobilized Candida antarctica lipase B (CALB) and the potential for an e...

210 Blood, Vol. 39, No. 2 (February), 1972 Blood obtained from seven patients with lambda type myeloma proteins showed evidence of gelatinous bulky clots, impaired clot retraction, and circulating anticoagulant activity associated with interference of fibrin monomer polymerization. Five patients had G1 and two had A1 myeloma proteins. The pathologic plasmas and isolated myeloma proteins had ant...

210 Blood, Vol. 39, No. 2 (February), 1972 Blood obtained from seven patients with lambda type myeloma proteins showed evidence of gelatinous bulky clots, impaired clot retraction, and circulating anticoagulant activity associated with interference of fibrin monomer polymerization. Five patients had G1 and two had A1 myeloma proteins. The pathologic plasmas and isolated myeloma proteins had ant...