Preparation and characterization of thiol- and amino-functionalized polysilsesquioxane coated poly(p-phenylenetherephthal amide) fibers and their adsorption properties towards Hg(II)
Sign Up to like & getrecommendations! Published in 2017 at "Chemical Engineering Journal"
DOI: 10.1016/j.cej.2017.02.073
Abstract: Abstract Two types of fibrous adsorbents, thiol- and amino- functionalized polysilsesquioxane coated poly(p-phenylenetherephthal amide) (PPTA) fibers (PPTA-PAPSQ and PPTA-PMPSQ), were prepared via the in situ condensations with aminopropyltriethoxysilane (APTES) and mercaptopropyltriethoxysilane (MPTES) on the surface… read more here.
Keywords: adsorption; polysilsesquioxane; ppta papsq; ppta ... See more keywords
Transparent and mechanically robust poly (para-phenylene terephthamide) PPTA nanopaper toward electrical insulation based on nanoscale fibrillated aramid-fibers
Sign Up to like & getrecommendations! Published in 2018 at "Composites Part A: Applied Science and Manufacturing"
DOI: 10.1016/j.compositesa.2018.10.009
Abstract: Abstract Due to chemically inert surface and poor interfacial interaction, PPTA (poly (para-phenylene terephthamide)) fiber-based specialty paper suffers from microvoids and limited physical properties. In this work, PPTA pulps were treated by DMSO/KOH to achieve… read more here.
Keywords: poly para; ppta; para phenylene; aramid fibers ... See more keywords
Chemical recycling of waste poly-p-phenylene terephthamide via selective cleavage of amide bonds catalyzed by strong Brönsted base in alcohols.
Sign Up to like & getrecommendations! Published in 2021 at "Waste management"
DOI: 10.1016/j.wasman.2021.11.006
Abstract: Poly-p-phenylene terephthamide (PPTA) is widely applied in bulletproof products and composite materials because of its high strength, high modulus, high temperature resistance and creep resistance. The PPTA molecule with highly symmetrical and regular structure is… read more here.
Keywords: degradation; waste; poly phenylene; ppta ... See more keywords
Polymerization of PPTA in Ionic Liquid/Cosolvent Mixtures
Sign Up to like & getrecommendations! Published in 2017 at "Macromolecules"
DOI: 10.1021/acs.macromol.7b00579
Abstract: 1-Octyl-3-methylimidazolium chloride ([C8MIM][Cl]) shows the greatest potential to replace N-methylpyrrolidone/CaCl2 as solvent for the synthesis of poly(p-phenylene terephthalamide) (PPTA), a high-strength material when spun into a fiber. Coordinating anions are crucial to prevent precipitation of… read more here.
Keywords: ionic liquid; ppta ionic; liquid cosolvent; ppta ... See more keywords
Patella-patellar tendon angle in relation to the medial patellar plica syndrome, chondromalacia patella, and infrapatellar fat pad syndrome
Sign Up to like & getrecommendations! Published in 2022 at "PLoS ONE"
DOI: 10.1371/journal.pone.0265331
Abstract: The patella-patellar tendon angle (PPTA) assessing the sagittal patellar tilt was reported to be related with anterior knee pain. Herein, clinical effect of PPTA in patients with medial patellar plica (MPP) syndrome, chondromalacia patella, and… read more here.
Keywords: syndrome; chondromalacia patella; syndrome chondromalacia; ppta ... See more keywords
The Phosin PptA Plays a Negative Role in the Regulation of Antibiotic Production in Streptomyces lividans
Sign Up to like & getrecommendations! Published in 2021 at "Antibiotics"
DOI: 10.3390/antibiotics10030325
Abstract: In Streptomyces, antibiotic biosynthesis is triggered in phosphate limitation that is usually correlated with energetic stress. Polyphosphates constitute an important reservoir of phosphate and energy and a better understanding of their role in the regulation… read more here.
Keywords: regulation antibiotic; antibiotic production; ppta; role regulation ... See more keywords
Recent Advances in Self-Assembly and Application of Para-Aramids
Sign Up to like & getrecommendations! Published in 2022 at "Molecules"
DOI: 10.3390/molecules27144413
Abstract: Poly(p-phenylene terephthalamide) (PPTA) is one kind of lyotropic liquid crystal polymer. Kevlar fibers performed from PPTA are widely used in many fields due to their superior mechanical properties resulting from their highly oriented macromolecular structure.… read more here.
Keywords: application; self assembly; liquid crystal; ppta ... See more keywords
Anti-Ballistic Performance of PPTA/UHMWPE Laminates
Sign Up to like & getrecommendations! Published in 2023 at "Polymers"
DOI: 10.3390/polym15102281
Abstract: Poly(p-phenylene terephthalamide) (PPTA) and ultra-high-molecular-weight polyethylene (UHMWPE) are high-performance polymer materials largely used for body armor applications. Although composite structures from a combination of PPTA and UHMWPE have been created and described in the literature,… read more here.
Keywords: ppta uhmwpe; ballistic performance; side; failure ... See more keywords