Results 11 to 20 of about 4,470 (211)

Synthesis and characterization of PIL/pNIPAAm hybrid hydrogels

Current Directions in Biomedical Engineering, 2016
In this study, varying amounts of NIPAAm and an ionic liquid (IL), namely 1-vinyl-3-isopropylimidazolium bromide ([ViPrIm]+[Br]−), have been used to synthesize hybrid hydrogels by radical emulsion polymerization. Amounts of 70/30%, 50/50%, 30/70%, 15/85%
Pfensig Sylvia, Arbeiter Daniela, Schmitz Klaus-Peter, Grabow Niels, Eickner Thomas, Illner Sabine   +5 more
doaj   +3 more sources

Biocompatibility of thermo‐responsive PNIPAAm‐PLLA‐PNIPAAm triblock copolymer as potential drug carrier

Polymers for Advanced Technologies, 2015
This work aims to evaluate the cytocompatibility and hemocompatibility of thermo‐responsive polymers as potential drug carrier. Thermo‐responsive poly(N‐isopropyl acrylamide) (PNIPAAm) and poly(N‐isopropyl acrylamide)‐poly(l‐lactide)‐poly(N‐isopropyl acrylamide) (PNIPAAm‐PLLA‐PNIPAAm) triblock copolymer were synthesized by atom transfer radical ...
Su, Feng, Shen, Xin, Hu, Yanfei, Darcos, Vincent, Li, S.M.   +4 more
openaire   +3 more sources

Swelling Deswelling Behavior of PS‐PNIPAAM Copolymer Particles and PNIPAAM Brushes Grafted from Polystyrene Particles & Monoliths

Macromolecular Materials and Engineering, 2008
AbstractTwo sets of emulsion particles have been synthesized. In the first set, surfactant free emulsion was used to directly synthesize PS‐PNIPAAM copolymer particles. In the second set, polystyrene particles with an ATRP initiator shell were first synthesized and subsequently grafted with PNIPAAM brushes.
V. Mittal, N. B. Matsko, A. Butte, MORBIDELLI, MASSIMO   +3 more
openaire   +2 more sources

Construction and property characterization of PNIPAAm-grafted chitosan/sodium alginate composite Thermo-responsive hydrogel films [PDF]

Food Chemistry: X
A series of thermo-responsive PNIPAAm-CS/SA composite hydrogel films were synthesized via radical polymerization and ionic cross-linking. FTIR, XPS, and NMR confirmed the successful covalent grafting of PNIPAAm onto the chitosan (CS) backbone.
Xiaoxue Lu, Jingna Liu, Yuanhong Zhuang, Bingli Wang, Peng Fei, Wenqiang Lai   +5 more
doaj   +2 more sources

Hidrogéis semi-IPN baseados em rede de alginato-Ca2+ com PNIPAAm entrelaçado: propriedades hidrofílicas, morfológicas e mecânicas Semi-IPN hydrogels based on alginate-Ca2+ network and PNIPAAm: hydrophilic, morphological and mechanical properties

Polímeros, 2008
Neste trabalho, a termossensibilidade dos hidrogéis do tipo semi-IPN baseados em rede de alginato-Ca2+com poli(N-isopropil acrilamida) (PNIPAAm) entrelaçado, com diferentes teores de alginato e de PNIPAAm, foi caracterizada por meio de medidas de grau de
Márcia R. de Moura, Adley F. Rubira, Edvani C. Muniz   +2 more
doaj   +2 more sources

Resistência mecânica de hidrogéis termo-sensíveis constituídos de Alginato-Ca2+ / PNIPAAm, tipo Semi-IPN Mechanicals resistance of thermosensitive hydrogels consisting of alginate-Ca2+ / PNIPAAm, type Semi-IPN [PDF]

Química Nova, 2007
Thermosensitive hydrogels were synthesized using alginate-Ca2+ in association with a thermosensitive polymer, such as PNIPAAm. The mechanical properties of the hydrogels were determined measuring the maximum tension of deformation.
Gilsinei Marques Campese, Elias Basile Tambourgi, Marcos Rogério Guilherme, Márcia Regina de Moura, Edvani Curti Muniz, Elza Youssef Youssef   +5 more
doaj   +3 more sources

Smart mesoporous silica nanoparticles for precision cancer therapy: Tumor targeting and stimuli‐responsive controlled release [PDF]

Smart Molecules, EarlyView.
Smart mesoporous silica nanoparticles integrate tunable pore structures, molecular gates, targeting ligands, and stimuli‐responsive components to achieve controlled drug release for precision cancer therapy. This review highlights design principles, therapeutic applications, and future directions in immunotherapy, biodegradability, biosafety, and ...
Majdi Al‐Amili, Lei Lei, Zhu Jin
wiley   +2 more sources

Understanding the Diffusion of Dextrans in ‘Click’ PNIPAAm Hydrogels

Australian Journal of Chemistry, 2013
Arguably the most important property of a hydrogel is the ability to allow the diffusion of solutes through the crosslinked network. Studies of the diffusion in hydrogels are important for providing information on the rate and extent of the passage of the solute and on the details of the microstructure of the hydrogel.
Ooi, Huey Wen, Peng, Hui, Jack, Kevin S., Whittaker, Andrew K.   +3 more
openaire   +5 more sources

Molecular design of dynamically thermoresponsive biomaterials [PDF]

Science and Technology of Advanced Materials
Dynamically thermoresponsive biomaterials, particularly those utilizing poly(N-isopropylacrylamide) (PNIPAAm), have attracted much attention in biomedical applications due to their reversible phase transition near body temperature.
Jun Kobayashi, Masamichi Nakayama, Kenichi Nagase   +2 more
doaj   +2 more sources

Peptide–PNIPAAm conjugate based hydrogels: synthesis and characterisation

Soft Matter, 2011
Thermo-responsive PNIPAAm rich hydrogels with controllable properties have been prepared by introducing small quantities of peptide-PNIPAAm bioconjugates where the peptide self-assembled into a β-sheet rich fibrillar network. This was achieved in a one pot synthesis using a thiol-modified peptide as the chain-transfer agent in the free radical ...
Maslovskis, Antons, Tirelli, Nicola, Saiani, Alberto; id_orcid 0000-0002-5504-8306, Saiani, Aline; id_orcid 0000-0003-2731-3536   +3 more
openaire   +3 more sources