Functionalized faujasite zeolite immobilized on poly(lactic acid) composite fibers to remove dyes from aqueous media

2019 ◽  
Vol 137 (15) ◽  
pp. 48561 ◽  
Author(s):  
Bruno C. Mascarenhas ◽  
Francine A. Tavares ◽  
Elaine C. Paris
Keyword(s):  
Lactic Acid ◽  
Aqueous Media ◽  
Poly Lactic Acid ◽  
Composite Fibers ◽  
Faujasite Zeolite

Fabrication of green composite fibers from ground tea leaves and poly(lactic acid) as eco-friendly textiles with antibacterial property

2021 ◽  
Author(s):  
Kankavee Sukthavorn ◽  
Benjarut Ketruam ◽  
Nollapan Nootsuwan ◽  
Suchada Jongrungruangchok ◽  
Chatchai Veranitisagul ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Antibacterial Property ◽  
Poly Lactic Acid ◽  
Composite Fibers ◽  
Green Composite ◽  
Tea Leaves

Melt Spinning of Poly(lactic acid) and Hydroxyapatite Composite Fibers: Influence of the Filler Content on the Fiber Properties

2013 ◽  
Vol 5 (15) ◽  
pp. 6864-6872 ◽  
Author(s):  
Maria Persson ◽  
Gabriela S. Lorite ◽  
Sung-Woo Cho ◽  
Juha Tuukkanen ◽  
Mikael Skrifvars
Keyword(s):  
Lactic Acid ◽  
Melt Spinning ◽  
Filler Content ◽  
Poly Lactic Acid ◽  
Composite Fibers ◽  
Fiber Properties ◽  
Hydroxyapatite Composite

Research on Preparation and Hydrolysis Resistance of Poly(lactic acid) Modified by MDI

2011 ◽  
Vol 320 ◽  
pp. 112-117
Author(s):  
Jian Jiang Shang ◽  
Jian Ning Wu ◽  
De Qiang Li ◽  
Ya Xi Huang ◽  
Ling Ming Zhao ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Degradation Rate ◽  
Addition Reaction ◽  
Aqueous Media ◽  
Poly Lactic Acid ◽  
Diphenylmethane Diisocyanate ◽  
Degradation Behavior ◽  
The Stability ◽  
Hydrolysis Resistance ◽  
Degradation Properties

The poly(lactic acid) (PLA) was modified by 4,4'-diphenylmethane diisocyanate (MDI) successfully prepared to improve the stability of PLA. The MDI and the hydroxyl terminated PLA could form PLA modified by MDI (MDI-PLA) via addition reaction. The structure of MDI-PLA was confirmed by FTIR and its degradation properties were investigated. The results showed that the pH of the aqueous media and the ion strength together played an important role in the degradation behavior of the PLA and MDI-PLA. Both of the PLA and MDI-PLA had the highest degradation rate in 0.01 M NaOH. It offers the best stability to hydrolysis resistance by adding the 0.6 wt% of MDI to the PLA materials，and have a more stable of 15 times than unmodified PLA.

scholarly journals Oligo(Lactic Acid)8-Docetaxel Prodrug-Loaded PEG-b-PLA Micelles for Prostate Cancer

Nanomaterials ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2745
Author(s):  
Lauren Repp ◽  
Christopher J. Unterberger ◽  
Zhengqing Ye ◽  
John B. Feltenberger ◽  
Steven M. Swanson ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Lactic Acid ◽  
Water Solubility ◽  
Polymeric Micelles ◽  
Drug Carrier ◽  
Aqueous Media ◽  
Water Soluble ◽  
Poly Lactic Acid ◽  
Chemotherapy Drugs

Docetaxel (DTX) is among the most frequently prescribed chemotherapy drugs and has recently been shown to extend survival in advanced prostate cancer patients. However, the poor water solubility of DTX prevents full exploitation of this potent anticancer drug. The current marketed formulation, Taxotere®, contains a toxic co-solvent that induces adverse reactions following intravenous injection. Nano-sized polymeric micelles have been proposed to create safer, water-soluble carriers for DTX, but many have failed to reach the clinic due to poor carrier stability in vivo. In this study, we aimed to improve micelle stability by synthesizing an ester prodrug of DTX, oligo(lactic acid)8-docetaxel (o(LA)8-DTX), for augmented compatibility with the core of poly(ethylene glycol)-b-poly(lactic acid) (PEG-b-PLA) micelles. Due to the enhancement of drug-carrier compatibility, we were able to load 50% (w/w) prodrug within the micelle, solubilize 20 mg/mL o(LA)8-DTX (~12 mg/mL DTX-equivalent) in aqueous media, and delay payload release. While the micelle core prohibited premature degradation, o(LA)8-DTX was rapidly converted to parent drug DTX through intramolecular backbiting (t1/2 = 6.3 h) or esterase-mediated degradation (t1/2 = 2.5 h) following release. Most importantly, o(LA)8-DTX micelles proved to be as efficacious but less toxic than Taxotere® in a preclinical mouse model of prostate cancer.

Electrical Properties of Heat-Treated Poly-Lactic Acid

2011 ◽  
Vol 131 (5) ◽  
pp. 395-400 ◽  
Author(s):  
Toru Oi ◽  
Katsuyoshi Shinyama ◽  
Shigetaka Fujita
Keyword(s):  
Lactic Acid ◽  
Electrical Properties ◽  
Poly Lactic Acid ◽  
Heat Treated

Dielectric Breakdown Properties of Poly-Lactic Acid with Spherulites Growth

2014 ◽  
Vol 134 (4) ◽  
pp. 237-242
Author(s):  
Naru Matsugasaki ◽  
Katsuyoshi Shinyama ◽  
Shigetaka Fujita
Keyword(s):  
Lactic Acid ◽  
Dielectric Breakdown ◽  
Poly Lactic Acid

Characterizing Attapulgite-Reinforced Nanocomposites of Poly(lactic acid)

2020 ◽  
Vol 62 (6) ◽  
pp. 732-743
Author(s):  
Chi-Hui Tsou ◽  
Jipeng Guo ◽  
Ji-Ang Lei ◽  
Manuel Reyes De Guzman ◽  
Maw-Cherng Suen
Keyword(s):  
Lactic Acid ◽  
Poly Lactic Acid
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