Associative Polymers and Physical Gels Derived from Natural Biopolymers
نویسندگان
چکیده
منابع مشابه
Molecular structures in biopolymers sols and gels
The short range molecular structure of ogarose in the sol state and r-carrageenans in the gel state have been investigated by small-angle neutron scattering (0.1< q(nm'l) < 2.5). Agarose in the sol state possesses a rod-like conformation (minimum persistence length of 14 nm) with a mass per unit length consistent with a single helm The existence of a double helix in the gel state is accordingly...
متن کاملRobust antimicrobial compounds and polymers derived from natural resin acids.
We report novel robust resin acid-derived antimicrobial agents that exhibit excellent antimicrobial activities against a broad spectrum of bacteria (6 Gram-positive and 7 Gram-negative) with selective lysis of microbial membranes over mammalian membranes. Our results indicate that hydrophobicity and unique structures of resin acids can be determining factors in dictating the antimicrobial activ...
متن کاملResponsive Azobenzene-Containing Polymers and Gels
The photoviscosity effect in aqueous solutions of novel poly(4-methacryloyloxyazobenzene-co-N,N-dimethyl acrylamide) (MOAB-DMA) was demonstrated. The observed significant reduction in the zero-shear viscosity upon UVirradiation of MOAB-DMA aqueous solutions was due to the dissociation of the interchain azobenzene aggregates. Such phenomena can be advantageously used in photoswitchable fluidic d...
متن کاملWell-defined liquid crystal gels from telechelic polymers.
Well-defined liquid crystal networks with controlled molecular weight between cross-links and cross-link functionality were prepared by "click" cross-linking of telechelic polymers produced by ring-opening metathesis polymerization (ROMP). The networks readily swell in a small molecule liquid crystal, 5CB, to form LC gels with high swelling ratios. These gels exhibit fast, reversible, and low-t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Revue de l'Institut Français du Pétrole
سال: 1997
ISSN: 0020-2274
DOI: 10.2516/ogst:1997025