AI Article Synopsis

  • There is a growing demand for bio-compatible polymers with a diverse range of properties, specifically focusing on poly(glycerol-adipate) (PGA), which is made from enzymatic reactions involving divinyl adipate and glycerol.
  • PGA can be synthesized into various forms, including acylated versions with different fatty acid chain lengths that change its properties, enabling the creation of comb-like structures.
  • The study showcases techniques like FT-IR, H NMR, and DLS to analyze and confirm PGA’s tunable attributes, making it a promising biodegradable polymer for applications in healthcare like drug delivery systems.

Article Abstract

There is an increasing need to develop bio-compatible polymers with an increased range of different physicochemical properties. Poly(glycerol-adipate) (PGA) is a biocompatible, biodegradable amphiphilic polyester routinely produced from divinyl adipate and unprotected glycerol by an enzymatic route, bearing a hydroxyl group that can be further functionalized. Polymers with an average Mn of ∼13 kDa can be synthesized without any post-polymerization deprotection reactions. Acylated polymers with fatty acid chain length of C, C, and C (PGAB, PGAO, and PGAS, respectively) at different degrees of substitution were prepared. These modifications yield comb-like polymers that modulate the amphiphilic characteristics of PGA. This novel class of biocompatible polymers has been characterized through various techniques such as FT-IR, H NMR, surface, thermal analysis, and their ability to self-assemble into colloidal structures was evaluated by using DLS. The highly tunable properties of PGA reported herein demonstrate a biodegradable polymer platform, ideal for engineering solid dispersions, nanoemulsions, or nanoparticles for healthcare applications. © 2016 The Authors. Journal of Polymer Science Part A: Polymer Chemistry Published by Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. , , 3267-3278.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5516180PMC
http://dx.doi.org/10.1002/pola.28215DOI Listing

Publication Analysis

Top Keywords

comb-like polymers
8
polymers
6
properties acyl
4
acyl modified
4
modified polyglycerol-adipate
4
polyglycerol-adipate comb-like
4
polymers self-assembly
4
self-assembly nanoparticles
4
nanoparticles increasing
4
increasing develop
4

Similar Publications

Brush-like graft copolymers (A-g-B), in which linear A-blocks are randomly grafted onto the backbone of a brush-like B-block, exhibit intense strain-stiffening and high mechanical strength on par with load-bearing biological tissues such as skin and blood vessels. To elucidate molecular mechanisms underlying this tissue-mimetic behavior, in situ synchrotron X-ray scattering was measured during uniaxial stretching of bottlebrush- and comb-like graft copolymers with varying densities of poly(dimethyl siloxane) and poly(isobutylene) side chains. In an undeformed state, these copolymers revealed a single interference peak corresponding to the average spacing between the domains of linear A-blocks arranged in a disordered, liquid-like configuration.

View Article and Find Full Text PDF
Article Synopsis
  • The genus Vitisma, described by Vršanský in 1999, features unique physical traits like a convex pronotum, sclerotized forewings, and simplified venation patterns.
  • The hindwing structure resembles that of the Blattulidae family, with specific characteristics like a distinct pterostigma and a comb-like R1 vein.
  • The discovery of Vitisma coriacea in Burmese amber indicates a broader historical distribution across Gondwana and suggests these insects thrived in warm, tropical forest environments.
View Article and Find Full Text PDF

Comb-like poly(β-amino ester)-integrated PEO-based self-healing solid electrolytes for fast ion conduction in lithium-sulfur batteries.

Mater Horiz

October 2024

Institute of New Energy Material Chemistry, School of Materials Science and Engineering, Nankai University, Tianjin 300350, China.

All-solid-state lithium-sulfur batteries (ASSLSBs) using poly(ethylene oxide) (PEO) electrolytes offer significant advantages in energy density and safety. However, their development is hampered by the slow Li conduction in solid polymer electrolytes and sluggish electrochemical conversion at the cathode-electrolyte interface. Herein, we fabricate a self-healing poly(β-amino ester) with a comb-like topological structure and multiple functional groups, synthesized through a Michael addition strategy.

View Article and Find Full Text PDF

Transport of a comb-like polymer across a nanochannel subject to a pulling force.

J Phys Condens Matter

October 2024

Department of Mathematics, Physics, and Statistics, Addis Ababa Science and Technology University, Addis Ababa, Ethiopia.

We investigate the dynamics of comb-like polymer translocation through a nanochannel using three-dimensional Langevin dynamics simulations based on a coarse-grained chain model. A comprehensive set of simulations are performed to examine the effects of system parameters such as the grafting densityof the side chains, the polymer chain length, the nanochannel dimensions, and the magnitude of the pulling force on the translocation dynamics. For a given polymer chain length, keeping the backbone length is constant while varying, we have found that the dependence of the mean translocation time⟨τ⟩onis non-monotonic, with a maximum translocation time for a specificat which the translocation is the slowest.

View Article and Find Full Text PDF

Crystallization-Induced Self-Assembly of Poly(ethylene glycol) Side Chains in Dithiol-yne-Based Comb Polymers: Side Chain Spacing and Molecular Weight Effects.

Macromolecules

May 2024

POLYMAT and Department of Polymers and Advanced Materials: Physics, Chemistry and Technology, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizábal, 3, 20018 Donostia-San Sebastián, Spain.

The chain architecture and topology of macromolecules impact their physical properties and final performance, including their crystallization process. In this work, comb polymers constituted by poly(ethylene glycol), PEG, side chains, and a dithiol-yne-based ring polymer backbone have been studied, focusing on the micro- and nanostructures of the system, thermal behavior, and crystallization kinetics. The designed comb system allows us to investigate the role of a ring backbone, the impact of varying the distance between two neighboring side chains, and the effect of the molecular weight of the side chain.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!

A PHP Error was encountered

Severity: Notice

Message: fwrite(): Write of 34 bytes failed with errno=28 No space left on device

Filename: drivers/Session_files_driver.php

Line Number: 272

Backtrace:

A PHP Error was encountered

Severity: Warning

Message: session_write_close(): Failed to write session data using user defined save handler. (session.save_path: /var/lib/php/sessions)

Filename: Unknown

Line Number: 0

Backtrace: