scholarly journals Strategy to construct polyzwitterionic hydrogel coating with antifouling, drag-reducing and weak swelling performance

RSC Advances ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 2081-2091 ◽  
Author(s):  
Jiajia Shen ◽  
Miao Du ◽  
Ziliang Wu ◽  
Yihu Song ◽  
Qiang Zheng
Keyword(s):  
Mechanical Properties ◽  
Swelling Behavior ◽  
Hydrogel Coatings ◽  
Hydrogel Coating

Polyzwitterionic hydrogel coatings with weak swelling behavior and strong mechanical properties were prepared and exhibited excellent antifouling and drag-reducing performances.

Mimicked scaffolds based on coated silk woven fabric with gelatin and chitosan for soft tissue defect in oral maxillofacial area

2019 ◽  
Vol 43 (3) ◽  
pp. 189-202
Author(s):  
Supaporn Sangkert ◽  
Suttatip Kamolmatyakul ◽  
Jirut Meesane
Keyword(s):  
Mechanical Properties ◽  
Cell Proliferation ◽  
Soft Tissue ◽  
Physical Performance ◽  
Silk Fibroin ◽  
Swelling Behavior ◽  
Woven Fabric ◽  
Soft Tissue Reconstruction ◽  
Residual Water ◽  
Defect Sites

Soft tissue defects in the oral maxillofacial area are critical problems for many patients and, in some cases, patients require an operation coupled with a performance scaffold substitution. In this research, mimicked anatomical scaffolds were constructed using gelatin- and chitosan-coated woven silk fibroin fabric. The morphologies, crystals, and structures were observed and then characterized using scanning electron microscopy, X-ray diffraction, and differential scanning calorimetry, respectively. Physical performance was evaluated from the swelling behavior, mechanical properties, and biodegradation, while the biological performance was tested with fibroblasts and keratinocytes, after which cell proliferation, viability, and histology were evaluated. The results revealed that a coated woven silk fibroin fabric displayed a crystal structure of silk fibroin with amorphous gelatin and chitosan layers. Also, the coated fabrics contained residual water within their structure. The physical performance of the coated woven silk fibroin fabric with gelatin showed suitable swelling behavior and mechanical properties along with acceptable biodegradation for insertion at a defect site. The biological performances including cell proliferation, viability, and histology were suitable for soft tissue reconstruction at the defect sites. Finally, the results demonstrated that mimicked anatomical scaffolds based on a gelatin layer on woven silk fibroin fabric had the functionality that was promising for soft tissue construction in oral maxillofacial defect.

Recycled High Density Polyethylene/Ethylene Vinyl Acetate (RHDPE/EVA)/Taro (Colocasia esculenta) Composites: The Effect of Caprolactam-Maleic Anhydride on Tensile Properties and Swelling Behaviour

2014 ◽  
Vol 695 ◽  
pp. 56-59
Author(s):  
A.R.H. Fatimah ◽  
A.Ghani Supri ◽  
Z. Firuz
Keyword(s):  
Mechanical Properties ◽  
Maleic Anhydride ◽  
Tensile Properties ◽  
Ethylene Vinyl Acetate ◽  
Swelling Behavior ◽  
Thermoplastic Composites ◽  
Weak Interface ◽  
Swelling Behaviour ◽  
Hydrophobic Polymer ◽  
Natural Fillers

Natural fillers fulfill most requirements needed to replace synthethic fillers in thermoplastic composites. However, some disadvantages appear when natural fillers are used for composites. The poor compatibility between the hydrophilic fillers with the hydrophobic polymer matrix leads to a weak interface and hence, thus poor mechanical properties. In this research, caprolactam-maleic anhydride (CL-MAH) was used as the compatibilizer (6wt%) and the effect of compatibilizer on the composites was studied on mechanical properties and swelling behavior of RHDPE/EVA/Taro. The tensile strength for RHDPE/EVA/Taro composites decreased while increasing the filler loadings but adding caprolactam-maleic anhydride in the composite significantly improved the tensile properties. The swelling behavior results indicated that increased in Taro filler and addition of CL-MAH will increase the mass swell of the composites.

Mechanical Properties and Swelling Behavior of End-Linked Poly(diethylsiloxane) Networks

2000 ◽  
Vol 33 (23) ◽  
pp. 8676-8684 ◽  
Author(s):  
Ronald C. Hedden ◽  
Himanshu Saxena ◽  
Claude Cohen
Keyword(s):  
Mechanical Properties ◽  
Swelling Behavior
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