scholarly journals Evaluation of Physical and Mechanical Properties of Porous Poly (Ethylene Glycol)-co-(L-Lactic Acid) Hydrogels during Degradation

PLoS ONE ◽  
2013 ◽  
Vol 8 (4) ◽  
pp. e60728 ◽  
Author(s):  
Yu-Chieh Chiu ◽  
Sevi Kocagöz ◽  
Jeffery C. Larson ◽  
Eric M. Brey
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Ethylene Glycol ◽  
Physical And Mechanical Properties ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene ◽  
Porous Poly

Porous poly(L-lactic acid)/poly(ethylene glycol) blend films

2004 ◽  
Vol 94 (3) ◽  
pp. 965-970 ◽  
Author(s):  
Koji Nakane ◽  
Yoshihiro Hata ◽  
Keisuke Morita ◽  
Takashi Ogihara ◽  
Nobuo Ogata
Keyword(s):  
Lactic Acid ◽  
Ethylene Glycol ◽  
Poly Ethylene Glycol ◽  
Blend Films ◽  
Poly Ethylene ◽  
Porous Poly

scholarly journals Chitin Nanofibrils in Poly(Lactic Acid) (PLA) Nanocomposites: Dispersion and Thermo-Mechanical Properties

2019 ◽  
Vol 20 (3) ◽  
pp. 504 ◽  
Author(s):  
Maria-Beatrice Coltelli ◽  
Patrizia Cinelli ◽  
Vito Gigante ◽  
Laura Aliotta ◽  
Pierfrancesco Morganti ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Ethylene Glycol ◽  
Morphological Properties ◽  
Water Evaporation ◽  
Poly Lactic Acid ◽  
Poly Ethylene Glycol ◽  
Water Suspension ◽  
Poly Ethylene ◽  
Reinforcing Filler

Chitin-nanofibrils are obtained in water suspension at low concentration, as nanoparticles normally are, to avoid their aggregation. The addition of the fibrils in molten PLA during extrusion is thus difficult and disadvantageous. In the present paper, the use of poly(ethylene glycol) (PEG) is proposed to prepare a solid pre-composite by water evaporation. The pre-composite is then added to PLA in the extruder to obtain transparent nanocomposites. The amount of PEG and chitin nanofibrils was varied in the nanocomposites to compare the reinforcement due to nanofibrils and plasticization due to the presence of PEG, as well as for extrapolating, where possible, the properties of reinforcement due to chitin nanofibrils exclusively. Thermal and morphological properties of nanocomposites were also investigated. This study concluded that chitin nanofibrils, added as reinforcing filler up to 12% by weight, do not alter the properties of the PLA based material; hence, this additive can be used in bioplastic items mainly exploiting its intrinsic anti-microbial and skin regenerating properties.

Thermal and mechanical properties of poly(lactic acid) modified by poly(ethylene glycol) acrylate through reactive blending

2014 ◽  
Vol 71 (12) ◽  
pp. 3305-3321 ◽  
Author(s):  
Kyung-Man Choi ◽  
Sung-Wook Lim ◽  
Myeon-Cheon Choi ◽  
Young-Min Kim ◽  
Dong-Hun Han ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Ethylene Glycol ◽  
Poly Lactic Acid ◽  
Thermal And Mechanical Properties ◽  
Poly Ethylene Glycol ◽  
Reactive Blending ◽  
Poly Ethylene

Uniformly Dispersed Poly(ethylene glycol) Functionalized Graphene Oxide/Poly(L-lactic acid) Nanocomposites with Balanced Mechanical Properties

2015 ◽  
Vol 815 ◽  
pp. 583-588
Author(s):  
Zi Jing Zhang ◽  
Yan Ni Zhou ◽  
Huan Liu ◽  
Le Min Zhu ◽  
Zhong Ming Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Graphene Oxide ◽  
Lactic Acid ◽  
Ethylene Glycol ◽  
High Performance ◽  
Gravimetric Analysis ◽  
Poly Ethylene Glycol ◽  
Functionalized Graphene Oxide ◽  
Strong Interfacial Interaction ◽  
Poly Ethylene

Balanced mechanical properties are always the goal of high-performance general plastics for engineering purposes. In order to develop uniformly dispersed graphene oxide/poly(L-lactic acid) nanocomposites with balanced mechanical properties, a poly(ethylene glycol) (PEG) grafted graphene oxide was introduced into poly(L-lactic acid) (PLLA) matrix. The PEG grafted graphene oxide (GEG) was confirmed by the results of fourier transform infrared (FTIR) spectra and thermal gravimetric analysis (TGA). Then the mechanical properties of the nanohybrids were measured. The results showed that in contrast to the aggregation of GO, GEG could uniformly disperse in PLLA matrix. An intriguing phenomenon is that thanks to the strong interfacial interaction between GEG and PLLA, it exhibits a substantial enhancement of the elongation at break (EB) as well as a simultaneous improvement of the tensile strength (TS), while the addition of GO decreases the EB of PLLA matrix. This work provides a potential industrialized technique for high-performance PLLA nanocomposites

scholarly journals Effects of poly(ethylene glycol)-grafted graphene on the electrical properties of poly(lactic acid) nanocomposites

RSC Advances ◽  
2019 ◽  
Vol 9 (19) ◽  
pp. 10599-10605 ◽  
Author(s):  
Kaibing Huang ◽  
Han Yu ◽  
Mei Xie ◽  
Shuai Liu ◽  
Fenxia Wu
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Electrical Properties ◽  
Ethylene Glycol ◽  
Poly Lactic Acid ◽  
Poly Ethylene Glycol ◽  
Composite Conductivity ◽  
Poly Ethylene

PEG-grafted GN has been synthesized and the effects of modification on the PLA composite conductivity, mechanical properties are investigated.

scholarly journals Controlling surface chemistry and mechanical properties of metal ionogels through Lewis acidity and basicity

2021 ◽  
Vol 9 (8) ◽  
pp. 4679-4686
Author(s):  
Coby J. Clarke ◽  
Richard P. Matthews ◽  
Alex P. S. Brogan ◽  
Jason P. Hallett
Keyword(s):  
Mechanical Properties ◽  
Ionic Liquids ◽  
Ethylene Glycol ◽  
Surface Chemistry ◽  
Lewis Acidity ◽  
Metal Species ◽  
Poly Ethylene Glycol ◽  
Acidity And Basicity ◽  
Poly Ethylene

Gels prepared from metal containing ionic liquids with cross-linked poly(ethylene glycol) have surface compositions and mechanical properties that can be controlled by Lewis basicity and acidity of the metal species.

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