[EN] FORCE-RESPONSIVE POLYMERSOMES AND NANOREACTORS; PROCESSES UTILIZING THE SAME<br/>[FR] POLYMERSOMES ET NANORÉACTEURS SENSIBLES À LA FORCE; PROCÉDÉS LES UTILISANT
申请人:ADOLPHE MERKLE INSTITUTE UNIV OF FRIBOURG
公开号:WO2019034597A1
公开(公告)日:2019-02-21
The mechanically induced melting properties of DNA were employed to achieve force labile membranes is described. Nucleobase pairs were used as mechanophores. Adenine and thymine functionalized complementary amphiphilic block copolymers were self-assembled into polymersomes. The nucleobases formed hydrogen bonds which were disrupted upon force stimulation. The exposure of the disconnected nucleobases to the hydrophobic matrix of the membranes lead to a change of permeability which permitted the exchange of water-soluble molecules throughout the polymer matrix. Moreover, the encapsulation of horseradish peroxidase enabled the reaction of luminol with hydrogen peroxide to yield a luminescence producing species similar to the marine bioluminescence. Moreover, the same nano-reactors were employed to catalyze the formation of a polyacrylamide gel when force was applied. Insights into the change of permeability of supramolecular networks upon force are provided. These systems are useful for drug delivery, as nanoreactors and for the selective release of curing agents for 3D printing, or fragrances.
Described herein are compounds and processes that can be used to prepare polymer-based films, particles, gels and related compositions, and processes for delivery of agents, and other uses.
Cosmetic composition based on a cosmetically active compound and a gel comprising at least one crosslinked network of crosslinked polymer particles
申请人:Mathonneau Estelle
公开号:US20050186165A1
公开(公告)日:2005-08-25
The present disclosure relates to a cosmetic composition, especially a hair composition, comprising, in a cosmetically acceptable medium, at least one cosmetically active compound and a gel comprising at least one crosslinked network of crosslinked polymer particles. The disclosure is also directed towards a method for fixing and/or holding a hairstyle using the composition, and also to the method of manufacturing a gel cosmetic formulation for holding and/or fixing the hairstyle.
STIMULI-SWITCHABLE MOIETIES, MONOMERS AND POLYMERS INCORPORATING STIMULI-SWITCHABLE MOIETIES, AND METHODS OF MAKING AND USING SAME
申请人:THE GOVERNORS OF THE UNIVERSITY OF ALBERTA
公开号:US20170267689A1
公开(公告)日:2017-09-21
Stimuli-switchable moieties, monomers incorporating stimuli-switchable moieties, and polymers incorporating such stimuli-switchable moieties are provided. The stimuli-switchable moiety can be a pyrano aryl chromenone-derivative. The stimuli-switchable monomer can be a lactone monomer. The stimuli-switchable monomer can be an amino acid, which can be incorporated into a specific peptide sequence by peptide synthesis.
COSMETIC COMPOSITION COMPRISING AT LEAST ONE CATIONIC COPOLYMER AND AT LEAST ONE ANIONIC ASSOCIATIVE POLYMER AND COSMETIC TREATMENT PROCESSES USING SAID COMPOSITION
申请人:BIGANSKA Olga
公开号:US20090074692A1
公开(公告)日:2009-03-19
The disclosure relates to novel cosmetic compositions comprising, in a cosmetically acceptable medium:
(i) at least one cationic polymer which are produced by polymerization of a mixture of monomers comprising:
a) at least one vinyl monomer substituted with at least one amino group,
b) at least one hydrophobic nonionic vinyl monomer,
c) at least one associative vinyl monomer, and
e) at least one hydroxylated nonionic vinyl monomer, and
(ii) at least one anionic associative polymers.