Star-Shaped Poly(ɛ-caprolactone)-co-poly(ethylene glycol) Synthesized with Oxalyl Chloride as Linker Molecule

Tinajero‐Díaz, Ernesto; Guerrero-Ramírez, Luis-Guillermo; Manríquez‐González, Ricardo; Martínez‐Richa, Antonio; Nuño‐Donlucas, S. M.

doi:10.1080/10601325.2014.906264

Cited by 3 publications

(2 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…reported the successful reaction between OxCl and hydroxyl groups in a homogeneous system (26). Similarly, in the present work the results suggest that the OxCl acyl groups and the CNTs hydroxyl groups reacted in a heterogeneous system as well.…”

Section: Nanocomposites Of Poly(acrylic Acid)-cntssupporting

confidence: 63%

Semi-Continuous Heterophase Polymerization to Synthesize Nanocomposites of Poly(acrylic acid)-Functionalized Carbon Nanotubes

Silva-Jara

Manríquez‐González

López-Dellamary

et al. 2015

Journal of Macromolecular Science, Part A

Self Cite

View full text Add to dashboard Cite

Two materials, pure poly(acrylic acid) (PAA) and nanocomposites with a matrix of PAA and carbon nanotubes (CNTs) as reinforcing agent were synthesized by semi-continuous heterophase polymerization (SHP). CNTs were prepared by a chemical vapor deposition technique and purified by steam. CNTs were characterized by a high resolution scanning electron microscopy (HRSEM) and Raman and Fourier transform infrared spectroscopies. Nanocomposites were prepared with: (i) purified CNTs (CNTs p ) or (ii) purified and functionalized CNTs possessing an acyl chloride moiety (CNTs OCl ). In both cases, the nanocomposites synthesis was carried out by in situ polymerization of acrylic acid (AA) by SHP. When CNTs OCl were used previously to the polymerization of AA, a series of specific amounts of CNTs OCl and AA were mixed to induce a chemical reaction between the carboxyl group of AA and the acyl chloride group of the CNTs OCl . The product, acrylic acid grafted to CNTs OCl (CNTs OCl -AA), was used to prepare the PAA-CNTs OCl nanocomposites. The PAA-CNTs OCl nanocomposites were characterized by HRSEM, Raman, FTIR and CPMAS 13 C-NMR spectroscopies and also by thermogravimetric analysis (TGA). The results reveal that PAA-CNTs OCl nanocomposites were formed by PAA macromolecules grafted to CNTs OCl . The kinetic behavior observed for the synthesis of pure PAA or PAACNTs OCl nanocomposites by SHP was similar. Latexes of PAA-CNTs OCl nanocomposites were stable without formation of a precipitate of CNTs OCl for over 1.5 years, while latex prepared with CNTs p and PAA, was unstable and formation of a precipitate of CNTs p was observed immediately after its preparation. PAA-CNTs p nanocomposites were characterized only by TGA. Moreover, latex of the PAA-CNTs p nanocomposite that did not precipitate immediately after its preparation, turned into a gel; this gelation never occurred with the PAA-CNTs OCl nanocomposite latex.

show abstract

Section: Nanocomposites Of Poly(acrylic Acid)-cntssupporting

confidence: 63%

Semi-Continuous Heterophase Polymerization to Synthesize Nanocomposites of Poly(acrylic acid)-Functionalized Carbon Nanotubes

Silva-Jara

Manríquez‐González

López-Dellamary

et al. 2015

Journal of Macromolecular Science, Part A

Self Cite

View full text Add to dashboard Cite

show abstract

“…In the last step, CNTs p red-OCl were utilized to produce the star-like PCL-PEG/CNTs p red-OCl nano compounds as below. The CNTs p red-OCl 72 were mixed with prepared star-like PCL-PEG copolymers 73, which was prepared by relatively modifying a chemical three-step method [54]. At first, a homopolymer of star-like PCL was produced by ɛ-caprolactone (ɛ-CL), pentaery-thritol (PTOL), and stannous octoate (SnOct 2 ) under reflux condition.…”

Section: Star-shaped Poly(ɛ-caprolactone) (Pcl)-poly(ethylene Glycol) (Peg)/cnts P Red Ocl Nano Compoundmentioning

confidence: 99%

The role of carbon nanotubes in antibiotics drug delivery

Ziarani¹,

Ashtiani²,

Mohajer³

et al. 2021

Frontiers Drug Chemistry Clinical Res

View full text Add to dashboard Cite

show abstract

Evaluation of the resistance to bacterial growth of star-shaped poly(ε-caprolactone)-co-poly(ethylene glycol) grafted onto functionalized carbon nanotubes nanocomposites

Cajero-Zul

López-Dellamary

Gómez-Salazar

et al. 2019

Journal of Biomaterials Science, Polymer Edition

View full text Add to dashboard Cite

Star-Shaped Poly(ɛ-caprolactone)-co-poly(ethylene glycol) Synthesized with Oxalyl Chloride as Linker Molecule

Cited by 3 publications

References 19 publications

Semi-Continuous Heterophase Polymerization to Synthesize Nanocomposites of Poly(acrylic acid)-Functionalized Carbon Nanotubes

Semi-Continuous Heterophase Polymerization to Synthesize Nanocomposites of Poly(acrylic acid)-Functionalized Carbon Nanotubes

The role of carbon nanotubes in antibiotics drug delivery

Evaluation of the resistance to bacterial growth of star-shaped poly(ε-caprolactone)-co-poly(ethylene glycol) grafted onto functionalized carbon nanotubes nanocomposites

Contact Info

Product

Resources

About