Network structure and compositional effects on tensile mechanical properties of hydrophobic association hydrogels with high mechanical strength

Polymer ◽  
2010 ◽  
Vol 51 (6) ◽  
pp. 1507-1515 ◽  
Author(s):  
Guoqing Jiang ◽  
Chang Liu ◽  
Xiaoli Liu ◽  
Qingrui Chen ◽  
Guohui Zhang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Mechanical Strength ◽  
Network Structure ◽  
Hydrophobic Association ◽  
High Mechanical Strength ◽  
Compositional Effects

scholarly journals High-strength and fibrous capsule–resistant zwitterionic elastomers

2021 ◽  
Vol 7 (1) ◽  
pp. eabc5442
Author(s):  
Dianyu Dong ◽  
Caroline Tsao ◽  
Hsiang-Chieh Hung ◽  
Fanglian Yao ◽  
Chenjue Tang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Mechanical Strength ◽  
High Strength ◽  
Design Principles ◽  
Fibrous Capsule ◽  
High Mechanical Strength ◽  
Capsule Formation ◽  
Locking Mechanism ◽  
Fibrous Capsule Formation

The high mechanical strength and long-term resistance to the fibrous capsule formation are two major challenges for implantable materials. Unfortunately, these two distinct properties do not come together and instead compromise each other. Here, we report a unique class of materials by integrating two weak zwitterionic hydrogels into an elastomer-like high-strength pure zwitterionic hydrogel via a “swelling” and “locking” mechanism. These zwitterionic-elastomeric-networked (ZEN) hydrogels are further shown to efficaciously resist the fibrous capsule formation upon implantation in mice for up to 1 year. Such materials with both high mechanical properties and long-term fibrous capsule resistance have never been achieved before. This work not only demonstrates a class of durable and fibrous capsule–resistant materials but also provides design principles for zwitterionic elastomeric hydrogels.

A novel biocompatible double network hydrogel consisting of konjac glucomannan with high mechanical strength and ability to be freely shaped

2015 ◽  
Vol 3 (9) ◽  
pp. 1769-1778 ◽  
Author(s):  
Zhiyong Li ◽  
Yunlan Su ◽  
Baoquan Xie ◽  
Xianggui Liu ◽  
Xia Gao ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tissue Engineering ◽  
Cell Adhesion ◽  
Mechanical Strength ◽  
Synthetic Polymer ◽  
Natural Polymer ◽  
Tissue Engineering Scaffolds ◽  
Adhesion Properties ◽  
High Mechanical Strength ◽  
Double Network

A novel physically linked double-network (DN) hydrogel was prepared by natural polymer KGM and synthetic polymer PAAm. The DN hydrogels exhibit good mechanical properties, cell adhesion properties, and can be freely shaped, making such hydrogels promising for tissue engineering scaffolds.

Morphology of Polyamideliquid Crystalline Polymer Blend

1990 ◽  
Vol 215 ◽  
Author(s):  
K. Nishii ◽  
M. Usui ◽  
T. Muraya ◽  
K. Kimura
Keyword(s):  
Mechanical Properties ◽  
Mechanical Strength ◽  
Polymer Blend ◽  
Liquid Crystalline Polymer ◽  
Liquid Crystalline ◽  
Crystalline Polymer ◽  
Polymer Structure ◽  
High Mechanical Strength ◽  
Blend Morphology ◽  
The Relationship

Polymer blend technology is attractive from the standpoint of both science and industry, and many combinations have been studied. Recently, the polymer blends, including liquid crystalline polymer, have been especially worthy of notice, [1,2,3]. In order to obtain materials with a high mechanical strength and moldability for use in thin molded items, we chose polyamide (PA)-liquid crystalline polymer (LCP) blends. In this study, we first measured the mechanical properties, then studied the features of the polymer structure. We also examined the relationship between morphology and mechanical properties. As a result, we found that the mechanical properties of the blends depended largely on blend morphology, and that mechanical strength increased as blend compatibility increased. On the other hand, we also found that the blends showed compatible and microheterogeneous dispersion at less than 25 wt% LCP, while at more than 30 wt% LCP, blends tended to show twophase separation.

Polymerizable deep eutectic solvents-based mechanically strong and ultra-stretchable conductive elastomers for detecting human motions

2021 ◽  
Author(s):  
Kaili Zhang ◽  
Ren'ai Li ◽  
Guangxue Chen ◽  
Yang Jimin ◽  
Junfei Tian ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Mechanical Strength ◽  
Flexible Electronics ◽  
Deep Eutectic Solvents ◽  
High Mechanical Strength ◽  
Conductive Elastomers ◽  
Human Motions

Conductive elastomers (CEs)with strong mechanical properties have been fabricated and used in flexible electronics. However, the development of CEs with both super-high mechanical strength and extreme stretchability remains challenging. This...

Construction and Properties of Hydrophobic Association Hydrogels with High Mechanical Strength and Reforming Capability

2009 ◽  
Vol 294 (12) ◽  
pp. 815-820 ◽  
Author(s):  
Guoqing Jiang ◽  
Chang Liu ◽  
Xiaoli Liu ◽  
Guohui Zhang ◽  
Meng Yang ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Hydrophobic Association ◽  
High Mechanical Strength

Swelling Behavior of Hydrophobic Association Hydrogels with High Mechanical Strength

2010 ◽  
Vol 47 (7) ◽  
pp. 663-670 ◽  
Author(s):  
Guoqing Jiang ◽  
Chang Liu ◽  
Xiaoli Liu ◽  
Guohui Zhang ◽  
Meng Yang ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Swelling Behavior ◽  
Hydrophobic Association ◽  
High Mechanical Strength

A novel 3D-printable hydrogel with high mechanical strength and shape memory properties

2019 ◽  
Vol 7 (47) ◽  
pp. 14913-14922 ◽  
Author(s):  
Qiang Zhou ◽  
Kaixiang Yang ◽  
Jiaqing He ◽  
Haiyang Yang ◽  
Xingyuan Zhang
Keyword(s):  
Mechanical Properties ◽  
3D Printing ◽  
Mechanical Strength ◽  
Shape Memory ◽  
Three Dimensional ◽  
High Mechanical Strength ◽  
Shape Memory Properties ◽  
Potential Applications

The three-dimensional (3D)-printing of hydrogels with excellent mechanical properties has attracted extensive attention owing to their potential applications in many fields.

scholarly journals Role of Nanoparticle-Polymer Interactions on the Development of Double-Network Hydrogel Nanocomposites with High Mechanical Strength

2020 ◽  
Author(s):  
Andrew Chang ◽  
Nasim Babhadiashar ◽  
Emma Barrett-Catton ◽  
Prashanth Asuri
Keyword(s):  
Mechanical Properties ◽  
Mechanical Strength ◽  
Elastic Moduli ◽  
Theoretical Research ◽  
High Mechanical Strength ◽  
Double Network ◽  
The Past ◽  
Hydrogel Nanocomposites ◽  
Hydrogel Composites

Extensive experimental and theoretical research over the past several decades has culminated in the understanding of the mechanisms behind nanoparticle-mediated enhancements on the mechanical properties of hydrogels. This information is not only crucial to realizing applications that directly benefit from developing hydrogels with high mechanical strength, but also to guide the development of strategies to further enhance hydrogel properties by combining different approaches. In our study, we investigated the effect of combining two approaches – addition of nanoparticles and crosslinking two different polymers (to create double-network hydrogels) – on the mechanical properties of hydrogels. Our studies revealed that these approaches may be combined to synthesize hydrogel composites with enhanced properties; however, both polymers in the double-network hydrogel must strongly interact with the nanoparticles to fully benefit from the addition of nanoparticles. Moreover, the concentration of hydrogel monomers used for the preparation of the double-network hydrogels had a significant effect on the extent of nanoparticle-mediated enhancements; double-network hydrogel nanocomposites prepared using lower monomer concentrations showed higher enhancements in elastic moduli compared to those prepared using high monomer concentrations. Collectively, these results demonstrate that the hypotheses previously developed to understand the role of nanoparticles on the mechanical properties of hydrogel nanocomposites may be extended to double-network hydrogel systems and guide the development of next generation hydrogels with extraordinary mechanical properties through a combination of orthogonal approaches.

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