Highly permeable, environmentally-friendly, antifouling polylactic acid-hydroxyapatite/polydopamine (PLA-HAp/PDA) ultrafiltration membranes

2021 ◽  
pp. 129871
Author(s):  
Mariam Ouda ◽  
Yazan Ibrahim ◽  
Parashuram Kallem ◽  
Bharath Govindan ◽  
Fawzi Banat ◽  
...  
Keyword(s):  
Polylactic Acid ◽  
Environmentally Friendly ◽  
Ultrafiltration Membranes

Asymmetrical Ultrafiltration Membranes Based on Polylactic Acid for the Removal of Organic Substances from Wastewater

2021 ◽  
Author(s):  
Hiyam Khalil ◽  
Hanaa M. Hegab ◽  
Lobna Nassar ◽  
Vijay S. Wadi ◽  
Vincenzo Naddeo ◽  
...  
Keyword(s):  
Polylactic Acid ◽  
Organic Substances ◽  
Ultrafiltration Membranes

Facile preparation of uniform polydopamine particles and its application as an environmentally friendly flame retardant for biodegradable polylactic acid

2020 ◽  
Vol 38 (6) ◽  
pp. 485-503
Author(s):  
Benjamin Tawiah ◽  
Bin Yu ◽  
Anthony Chun Yin Yuen ◽  
Bin Fei
Keyword(s):  
Flame Retardant ◽  
Polylactic Acid ◽  
Flame Retardants ◽  
Environmentally Friendly ◽  
Environmentally Benign ◽  
Commercial Application ◽  
Limiting Oxygen Index ◽  
Gaseous Products ◽  
Peak Heat Release Rate ◽  
Insight Into

The demand for environmentally benign flame retardants for biodegradable polymers has become particularly necessary due to their inherently “green” nature. This work reports intrinsically non-toxic polydopamine (PDA) particles as an efficient and environmentally friendly flame retardant for polylactic acid (PLA). 5 wt% PDA loading resulted in a 22% reduction in the peak heat release rate, 34.7% increase in the fire performance index, and lower CO2 production compared to neat PLA. A limiting oxygen index (LOI) value of 27.5% and a V-2 rating was achieved in the UL-94 vertical burning test. Highly aggregated amorphous particulate char was formed with the increasing content of PDA, and a significant reduction in evolved pyrolysis gaseous products was achieved for the PLA/PDA composites as compared with control PLA. This work provides important insight into the potential commercial application of PDA alone as an efficiently green, environmentally benign flame retardant for bioplastic PLA.

scholarly journals Research progress on toughening and modification of polylactic acid with environmentally friendly materials

2020 ◽  
Vol 50 (12) ◽  
pp. 1769-1780
Author(s):  
Duo Tang ◽  
Caili Zhang ◽  
Yingxin Zhou ◽  
Xinyu Song ◽  
Yunxuan Weng ◽  
...  
Keyword(s):  
Polylactic Acid ◽  
Environmentally Friendly ◽  
Research Progress

Environmentally Friendly Polylactic Acid/Modified Lignosulfonate Biocomposites

2016 ◽  
Vol 25 (3) ◽  
pp. 884-902 ◽  
Author(s):  
Georgeta Cazacu ◽  
Raluca Nicoleta Darie-Nita ◽  
Oana Chirila ◽  
Marian Totolin ◽  
Mihai Asandulesa ◽  
...  
Keyword(s):  
Polylactic Acid ◽  
Environmentally Friendly

Environmentally Friendly DVD-ROM Using Polylactic Acid Polymer Alloy as a Substrate

2005 ◽  
Author(s):  
Koji Tsujita ◽  
Takayuki Onizawa ◽  
Satoshi Teradate ◽  
Noboru Kawai ◽  
Hiroyuki Ome ◽  
...  
Keyword(s):  
Polylactic Acid ◽  
Environmentally Friendly ◽  
Polymer Alloy

Supercritical Debinding of Environmentally Friendly Inconel 718 Feedstock to Metal Injection Moulding Process

2016 ◽  
Vol 716 ◽  
pp. 824-829
Author(s):  
Alexandre Royer ◽  
Jean Claude Gelin ◽  
Thierry Barrière
Keyword(s):  
Polyethylene Glycol ◽  
Polylactic Acid ◽  
Supercritical Fluid ◽  
Injection Moulding ◽  
Inconel 718 ◽  
Environmentally Friendly ◽  
New Method ◽  
Moulding Process ◽  
Metal Injection Moulding ◽  
Injection Moulding Process

In the MIM process the debinding is a long, complicated and polluting step. The supercritical fluid debinding is a new method to reduce the time of debinding, the default of the pieces and the pollution. The goal of this study is to study the behaviour of an environmentally friendly feedstock of Inconel 718. For this, a binder formulation based on polyethylene glycol, because of is water debinding properties, and bio sourced polymer was made. Polylactic acid was investigated as bio sourced polymer. The debinding is realized with supercritical CO2 as solvent. The results were compared to the traditional debinding method using water at 60°C.

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