Results 61 to 70 of about 5,263 (208)

Self‐Driving Laboratory Optimizes the Lower Critical Solution Temperature of Thermoresponsive Polymers

Advanced Intelligent Discovery, EarlyView.
A low‐cost, self‐driving laboratory is developed to democratize autonomous materials discovery. Using this "frugal twin" hardware architecture with Bayesian optimization, the platform rapidly converges to target lower critical solution temperature (LCST) values while self‐correcting from off‐target experiments, demonstrating an accessible route to data‐
Guoyue Xu, Renzheng Zhang, Tengfei Luo
wiley   +1 more source

Smart Bioinspired Material‐Based Actuators: Current Challenges and Prospects

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
This work gathers, in a review style, an extensive and comprehensive literature overview on the development of autonomous actuators based on synthetic materials, bringing together valuable knowledge from several studies. Furthermore, the article identifies the fundamental principles of actuation mechanisms and defines key parameters to address the size
Alejandro Palacios, Léon Chiriatti, Simon Poppinga, Thomas Speck, Vincent Le Houérou   +4 more
wiley   +1 more source

4D Materials of Tough and Rapid Thermoresponsive Hydrogel by PET‐RAFT Polymerization

Journal of Applied Polymer Science, EarlyView.
NIPAm‐containing bilayer hydrogels using a novel hydrogel formation method utilizing oxygen‐tolerant PET‐RAFT polymerization to investigate their temperature‐responsive behavior. The material properties strongly depend on NIPAm concentration and polymer density. Finally, we demonstrated a model gripper with optimized compositions.
Chanhyuk Jee, Mina Shigeyama, Kakeru Ohbayashi, Ken Kojio, Hikaru Matsumoto, Masanori Nagao, Yoshiko Miura   +6 more
wiley   +1 more source

Temperature Driven Transformation in Dextran-Graft-PNIPAM/Embedded Silver Nanoparticle Hybrid System

International Journal of Polymer Science, 2019
During the last decade, stimuli-responsible polymers based on poly(N-isopropylacrylamide) having conformational transition in the range of physiological temperature have been discussed as novel drug delivery nanosystems.
V. Chumachenko, N. Kutsevol, Iu Harahuts, D. Soloviov, L. Bulavin, O. Yeshchenko, A. Naumenko, O. Nadtoka, A. Marinin   +8 more
doaj   +1 more source

Linear Viscoelastic Behavior of n‐Alkane Diluted Polyethylene Melts: Sorption, Desorption, and Oscillatory Rheometry

Journal of Applied Polymer Science, EarlyView.
This study systematically maps polyolefin dilution dynamics using a homologous series of n‐alkanes. Integrating gravimetric sorption, subsequent controlled desorption, and oscillatory rheometry establishes a precise framework to analyze reduction in viscosity at least for polymer diluent mixtures with polymer concentration > 35% and diluent ...
Ernst Georg Viehböck, Georg Gschwendner, Dario Pindrić, Gunnar Spiegel, Alexander Hammer, Christian Paulik, Gerald Berger‐Weber   +6 more
wiley   +1 more source

Process Optimization of Solution Blow Spinning for Poly (N‐Isopropylacrylamide) Fibers

Journal of Applied Polymer Science, EarlyView.
Solution blow spinning has emerged as a safe and scalable technique for fabricating thermoresponsive PNIPAM fibers. The influence of key parameters on jet stability and fiber uniformity is determined through both rheological analysis and statistical process optimization. A Box–Behnken design reveals an optimized window for producing PNIPAM fibers below
Maryam Parastar, Filipe de Almeida Araujo, Uttandaraman Sundararaj   +2 more
wiley   +1 more source

Water dynamics in solutions of linear poly (N-isopropyl acrylamide) studied by 2H NMR field-cycling relaxometry

Frontiers in Soft Matter
We use 2H nuclear magnetic resonance to study the dynamics of deuterated water in a solution of linear poly (N-isopropyl acrylamide) (pNIPAM, 4 wt%) across its coil-to-globule transition at a lower critical solubility temperature (LCST) around 32°C.
Christoph Säckel, Regine von Klitzing, Renée Siegel, Jürgen Senker, Michael Vogel   +4 more
doaj   +1 more source

Effect of polymer concentration on the lifetime and transmittance behavior of a self-oscillating polymer chain with a high lower critical solution temperature

MATEC Web of Conferences, 2017
In this study, we investigated the lifetime and self-oscillating behavior of a polymer chain with a high lower critical solution temperature (LCST). The polymer chain comprised 4-vinyl-4´-methyl-2,2´-bipyridinebis(2,2´-bipyridine)bis(hexafluorophosphate)
Nakazumi Tomoka, Hara Yusuke
doaj   +1 more source

Effect of LCST on the swelling of PAAm-NIPA copolymers: a fluorescence study

Polymer Bulletin, 2011
Temperature sensitive copolymers were prepared by free radical crosslinking copolymerization in aqueous solution with different molar percentage of N-isopropylacrylamide (NIPA) and acrylamide (AAm) monomers. N,N′-methylenebis (acrylamide) (BIS) and ammonium persulfate (APS) were used as a crosslinker and an initiator, respectively.
Evingür, Gülşen Akin, Pekcan, Mehmet Önder, Pekcan, Önder   +2 more
openaire   +2 more sources

A novel biomimetic liposome drug delivery system mediated by macrophage targeting for precision treatment of encephalitis

BMEMat, EarlyView.
An advanced macrophage‐mediated biomimetic liposome (AC‐LP@RAW) that can penetrate the BBB and precisely target inflammatory sites in the deep brain was established in this study based on the unique immune homing property of macrophages, and showed a significantly improved delivery of curcumin to the brain.
Mengru Wu, Baoqin Song, Zhihao Chen, Wenzhong Li, Wanjun Liang, Xiu Wang   +5 more
wiley   +1 more source