نتایج جستجو برای: thermoresponsive

تعداد نتایج: 1274  

Journal: :ACS applied materials & interfaces 2015
Hamilton Kakwere Manuel Pernia Leal Maria Elena Materia Alberto Curcio Pablo Guardia Dina Niculaes Roberto Marotta Andrea Falqui Teresa Pellegrino

Herein, we prepare nanohybrids by incorporating iron oxide nanocubes (cubic-IONPs) within a thermoresponsive polymer shell that can act as drug carriers for doxorubicin(doxo). The cubic-shaped nanoparticles employed are at the interface between superparamagnetic and ferromagnetic behavior and have an exceptionally high specific absorption rate (SAR), but their functionalization is extremely cha...

Journal: :ACS applied materials & interfaces 2017
Xin Zhang Leon M Bellan

The disintegration of transient electronic systems after a preprogrammed time or a particular stimulus (e.g., water, light, or temperature) is fundamentally linked to the properties and behavior of the materials used for their construction. Herein, we demonstrate that polymers exhibiting lower critical solution temperature (LCST) behavior can work as thermoresponsive substrates for circuitry an...

Journal: :Soft matter 2016
Ge Wang Peiyi Wu

The influence of two thermoresponsive polymers, poly(N-isopropylacrylamide) (PNIPAM) and poly(N-vinylcaprolactam) (PVCL), on the phase transition behavior of a thermoresponsive ionic liquid, tributylhexylphosphonium 3-sulfopropylmethacrylate ([P4,4,4,6][MC3S]), was investigated. An obvious distinction was observed in the LCSTs and morphologies of [P4,4,4,6][MC3S]-PNIPAM and [P4,4,4,6][MC3S]-PVC...

2017
Qian Zhao Luping Ning Yunhong Liang Zhihui Zhang Luquan Ren

A novel kind of nanofibrillated cellulose (NFC) reinforced polyvinyl butyral (PVB) nanofibers-containing bilayer hydrogel system was successfully fabricated via the combination of a one-step, in-situ, free radical polymerization and electrospinning. The hydrogel owned high mechanical strength, thermoresponsive, and near infrared bending/unbending properties. The cross-linking density of hydroge...

Journal: :Colloids and surfaces. B, Biointerfaces 2011
Linhui Li Jindan Wu Changyou Gao

Using surface initiated atomic transfer radical polymerization (ATRP) and an injection method, a poly(N-isopropylacrylamide)-b-poly(acrylic acid)-g-RGD (PNIPAAm-b-PAA-g-RGD) gradient surface was prepared. First, a thermoresponsive surface with a constant thickness of PNIPAAm was fabricated, onto which the AA monomers were block copolymerized using the PNIPAAm macromolecules as initiators. Durin...

Journal: :Current Biology 2015
Mathew S. Box B. Emma Huang Mirela Domijan Katja E. Jaeger Asif Khan Khattak Seong Jeon Yoo Emma L. Sedivy D. Marc Jones Timothy J. Hearn Alex A.R. Webb Alastair Grant James C.W. Locke Philip A. Wigge

Plant development is highly responsive to ambient temperature, and this trait has been linked to the ability of plants to adapt to climate change. The mechanisms by which natural populations modulate their thermoresponsiveness are not known. To address this, we surveyed Arabidopsis accessions for variation in thermal responsiveness of elongation growth and mapped the corresponding loci. We find...

Journal: :Angewandte Chemie 2011
Catherine M Clavel Olivier Zava Frédéric Schmitt Blanka Halamoda Kenzaoui Alexey A Nazarov Lucienne Juillerat-Jeanneret Paul J Dyson

2014
Manish K. Jaiswal Mrinmoy De Stanley S. Chou Shaleen Vasavada Reiner Bleher Pottumarthi V. Prasad Dhirendra Bahadur Vinayak P. Dravid

We report the development of thermoresponsive magnetic hydrogels based on poly(N-isopropylacrylamide) encapsulation of Fe3O4 magnetic nanostructures (MNS). In particular, we examined the effects of hydrogels encapsulated with poly-ethylene glycol (PEG) and polyhedral oligomeric silsesquioxane (POSS) surface modified Fe3O4 MNS on magnetic resonance (MR) T2 (transverse spin relaxation) contrast e...

2007
Sarah E. Stabenfeldt Michelle C. LaPlaca Shawn Hochman Yadong Wang Sidney J. Harris

Traumatic injury to the central nervous system triggers cell death and deafferentation, which may activate a cascade of cellular and network disturbances. These events often result in the formation of irregularly shaped lesions comprised of necrotic tissue and/or a fluid-filled cavity. Tissue engineering represents a promising treatment strategy for the injured neural tissue. To facilitate mini...

Journal: :Acta biomaterialia 2012
Todd Hoare Stuart Young Michael W Lawlor Daniel S Kohane

Nanogels based on poly(N-isopropylacrylamide) are attractive vehicles for prolonged duration local anesthesia because of their tunable size, number of functional groups, thermoresponsiveness and anionic charge. Nerve block durations of up to 9h were achieved using acrylic acid-loaded nanogels loaded with bupivacaine. Increasing the anionic charge density of the nanogels or (for more highly acid...

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