Results 211 to 220 of about 55,802 (258)
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Functional Semi‐Interpenetrating Polymer Networks
Macromolecular Rapid CommunicationsAbstractSemi‐interpenetrating polymer networks (SIPNs) have garnered significant interest due to their potential applications in self‐healing materials, drug delivery systems, electrolytes, functional membranes, smart gels and, toughing. SIPNs combine the characteristics of physical cross‐linking with advantageous chemical properties, offering broad ...
Minghao Wang +4 more
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Polyurethane-modified polyester semi-interpenetrating networks
Polymer, 1979Abstract Four semi-interpenetrating polymer network materials based on a methyl acrylate modified crosslinked polyester and a polyurethane were synthesized and their dynamic mechanical and stress-strain properties were investigated. The tan δ-temperature dispersion of the semi-interpenetrating polymer network containing 70% polyurethane showed two ...
D.J. Hourston, Y. Zia
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Polyhydroxyacrylate–polyurethane semi-interpenetrating polymer networks
European Polymer Journal, 2001Abstract A series of semi-interpenetrating polymer networks based on a polyhydroxyacrylate of Bisphenol A and a polyurethane was synthesized by the simultaneous polymerization technique. The polyhydroxyacrylate resin was cross-linked in the presence of dicumyl peroxide at 130°C, including in its network structure the linear polyurethane.
D. Roşu, C. Ciobanu, C.N. Caşcaval
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Conducting Polyaniline Confined in Semi-Interpenetrating Networks
Macromolecular Rapid Communications, 2002Communication: Conducting semi-interpenetrating network composites with low conductivity percolation threshold were synthesized from waterborne conducting polyaniline (cPAn) and melamine-urea resin, A perfect network of cPAn in the composite was observed by means of TEM (see Figure). The conductivity stability of cPAn in water was improved by confining
Yanju Wang +6 more
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Collapse of thermosensitive polyelectrolyte semi-interpenetrating networks
Polymer, 2012Abstract Thermosensitive ionic semi-interpenetrating polymer networks (semi-IPNs) based on poly(N-isopropylacrylamide) (PNIPAAm) and poly(styrene sulfonic acid sodium salt) (PSS) were synthesized, and their properties, such as conversion, swelling ratio and swelling/shrinking kinetics, were studied at different PSS fractions and molecular weight (MW).
Elena Yu. Kozhunova +2 more
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HyperMacs – Highly Branched Network Precursors or Semi‐Interpenetrating Networks?
Macromolecular Symposia, 2010AbstractWe describe here a strategy for the synthesis of HyperMacs – long‐chain branched analogues of hyperbranched polymers. The building blocks for HyperMacs, AB2 macromonomers, are synthesized by living anionic polymerization and, as such, are well‐defined in terms of molecular weight (MW) and polydispersity.
Jonathan M. Dodds, Lian R. Hutchings
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Structure and properties of semi-interpenetrating network hydrogel based on starch
Carbohydrate Polymers, 2015Starch-g-P(acrylic acid-co-acrylamide)/PVA semi-interpenetrating network (semi-IPN) hydrogels were prepared by aqueous solution polymerization method. Starch grafting copolymerization reaction, semi-IPN structure and crystal morphology were characterized by Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD).
Baodong Zhu +3 more
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Nanostructures Developed from Semi‐Interpenetrating Polymer Network Structures
Macromolecular Chemistry and Physics, 2003AbstractMorphology development from a semi‐interpenetrating polymer network structure (semi‐IPN structure), induced by first‐stage photocuring and aided by annealing, is investigated in a binary blend of a photocurable polymer (2,2‐bis(4‐(acryloxydiethoxy)phenyl)propane; BPE4), and a linear polymer (polysulfone; PSU).
Jain, S.H., Murata, K., Anazawa, T.
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New Semi‐Interpenetrating Network Hydrogels: Synthesis, Characterization and Properties
Macromolecular Bioscience, 2006AbstractSummary: Amphiphilic hydrogels composed of aliphatic polyesters and poly(ethylene glycol) have potential applications in drug delivery, tissue engineering and other biomedical devices due to their advantageous biological properties, biocompatibility and biodegradability. However, they also exhibit some shortcomings in terms of their reactivity,
San-Ping, Zhao, Dong, Ma, Li-Ming, Zhang
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ACS Sustainable Chemistry and Engineering, 2018 Sustainable shape-memory and self-healing elastomers with semi-interpenetrating network were prepared by a simple, efficient, and green bulk radical polymerization of ethyl cellulose, furfural, and fatty-acid-derived monomers. This approach could in situ
Chuanwei Lu, Xiaohuan Liu, Jifu Wang
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