Development of visible-light responsive and mechanically enhanced “smart” UCST interpenetrating network hydrogels

Soft Matter ◽  
2018 ◽  
Vol 14 (1) ◽  
pp. 151-160 ◽  
Author(s):  
Yifei Xu ◽  
Onkar Ghag ◽  
Morgan Reimann ◽  
Philip Sitterle ◽  
Prithwish Chatterjee ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Visible Light ◽  
Polymer Network ◽  
Interpenetrating Polymer Network ◽  
Solution Temperature ◽  
Interpenetrating Network ◽  
Critical Solution Temperature ◽  
Smart Hydrogel ◽  
Upper Critical Solution Temperature

An interpenetrating polymer network, chlorophyllin-incorporated “smart” hydrogel was synthesized and exhibited enhanced mechanical properties, upper critical solution temperature swelling, and promising visible-light responsiveness.

scholarly journals Synthesis and Properties of pH-Thermo Dual Responsive Semi-IPN Hydrogels Based on N,N’-Diethylacrylamide and Itaconamic Acid

Polymers ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1139 ◽  
Author(s):  
Huynh Nguyen Anh Tuan ◽  
Vo Thi Thu Nhu
Keyword(s):  
Polymer Network ◽  
Viscoelastic Behavior ◽  
Interpenetrating Polymer Network ◽  
Molar Ratio ◽  
Solution Temperature ◽  
Gravimetric Analysis ◽  
Compression Tests ◽  
Critical Solution Temperature ◽  
Dual Responsive ◽  
Superior Mechanical Properties

A series of semi-interpenetrating polymer network (semi-IPN) hydrogels based on N,N’-diethylacrylamide (DEA) and itaconamic acid (IAM) were synthesized by changing the molar ratio of linear copolymer P(DEA-co-IAM) and DEA monomer. Linear copolymer P(DEA-co-IAM) was introduced into a solution of DEA monomer to prepare pH-thermo dual responsive P(DEA-co-IAM)/PDEA semi-IPN hydrogels. The thermal gravimetric analysis (TGA) revealed that the semi-IPN hydrogel has a higher thermal stability than the conventional hydrogel, while the interior morphology by scanning electron microscopy (SEM) showed a porous structure with the pore sizes could be controlled by changing the ratio of linear copolymer in the obtained hydrogels. The oscillatory parallel-plate rheological measurements and compression tests demonstrated a viscoelastic behavior and superior mechanical properties of the semi-IPN hydrogels. Besides, the lower critical solution temperature (LCST) of the linear copolymers increased with the increase of IAM content in the feed, while the semi-IPN hydrogels increased LCSTs with the increase of linear copolymer content introduced. The pH-thermo dual responsive of the hydrogels was investigated using the swelling behavior in various pH and temperature conditions. Finally, the swelling and deswelling rate of the hydrogels were also studied. The results indicated that the pH-thermo dual responsive semi-IPN hydrogels were synthesized successfully and may be a potential material for biomedical, drug delivery or absorption applications. The further applications of semi-IPN hydrogels are being conducted.

Improving the Toughness of Poly (L-lactic acid) by Interpenetrating Network Structure

2011 ◽  
Vol 239-242 ◽  
pp. 1919-1922
Author(s):  
Tun Galag Dong ◽  
Ye Jin ◽  
Xin Guo ◽  
Wen Xiu Sun ◽  
Meng Ting Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Glass Transition ◽  
Tensile Test ◽  
Room Temperature ◽  
Fracture Strain ◽  
Polymer Network ◽  
Interpenetrating Polymer Network ◽  
Interpenetrating Network ◽  
Composite Samples

An interpenetrating polymer network was formed by blending of PLLA and PEG cross-linked β-CD to improve the toughness of PLLA, and the mechanical properties of PLLA composites were studied using tensile test. The PLLA composite samples exhibited a single glass transition and their Tg values decreased with increasing PEG/β-CD content, indicating that PLLA and PEG/β-CD are miscible. The PLLA composite samples aged at room temperature achieved the highest fracture strain (about 235%), about 40 times that of the original PLLA sample, while the Young's modulus was not seriously hampered.

Selective Hydrogen Bonding Controls Temperature Response of Layer-by-Layer Upper Critical Solution Temperature Micellar Assemblies

Soft Matter ◽  
2021 ◽  
Author(s):  
Aliaksei Aliakseyeu ◽  
Victoria Albright ◽  
Danielle Yarbrough ◽  
Samantha Hernandez ◽  
Qing Zhou ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Methacrylic Acid ◽  
Temperature Response ◽  
Solution Temperature ◽  
Layer By Layer ◽  
Critical Solution Temperature ◽  
Hydrogen Bonding Interactions ◽  
Upper Critical Solution Temperature ◽  
Lbl Films

This work establishes a correlation between the selectivity of hydrogen-bonding interactions and the functionality of micelle-containing layer-by-layer (LbL) assemblies. Specifically, we explore LbL films formed by assembly of poly(methacrylic acid)...

Interpenetrating Covalent Adaptable Networks with Enhanced Mechanical Properties and Facile Reprocessability and Recyclability

2021 ◽  
Author(s):  
Yufeng Lei ◽  
Anqiang Zhang ◽  
Yaling Lin
Keyword(s):  
Mechanical Properties ◽  
High Performance ◽  
Polymer Network ◽  
Continuous Phase ◽  
Interpenetrating Polymer Network

Blending polymers has always been a critical strategy toward high-performance materials. By creating interpenetrating polymer network (IPN), the incompatibility of different polymers could be overcome and a favorable bi-continuous phase...

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