Fabrication and in vitro degradation study of novel optically active polymers derived from amino acid containing diacids and 4,4′-thiobis(2-tert-butyl-5-methylphenol)

Mallakpour, Shadpour; Soltanian, Samaneh; Sabzalian, Mohammad R.

doi:10.1007/s10965-011-9573-y

Cited by 10 publications

(6 citation statements)

References 27 publications

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“…A cell toxicity assay verified that functionalized PLGA NPs were more effective than un-functionalized ones according to modified surface, which can improve the efficiency of NPs by increasing cell targeting and/or tissue targeting and/or site-specific delivery PLGA NPs. Mallakpour et al [73] designed chiral bioactive PEIs containing L-phenylalanine and L-leucine amino acids with nanoscale size and good thermal stability.…”

Section: Application Of Biodegradable Nanostructure Polymersmentioning

confidence: 99%

Polymeric nanoparticles: Recent development in synthesis and application

Mallakpour¹,

Behranvand²

2016

Express Polym. Lett.

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Abstract. Nanosized particles have attractive characteristics, which have received considerable attention in the last decade. Polymeric nanoparticles (PNP)s are solid particles or particulate dispersions with size in the range of 10-1000 nm. Due to the very small size, the surface area is very large so the percentage of atoms or molecules on the surface is significantly increased, which is expected to have extensive applications in various fields such as drug delivery systems, biosensors, catalysts, nanocomposites, agriculture and environment. The aim of the present paper is to critically review enhancement in the field of synthesis and different application of novel PNPs in various area from drug delivery to composite fabrication. Literature sources were mainly taken from the publications of 2011 and later; though, for a basic depiction of the structural principles, older publications have also been cited. Vol.10, No.11 (2016) 895-913 Available online at www.expresspolymlett.com DOI: 10.3144/expresspolymlett.2016.84 * Corresponding author, e-mail: mallak@cc.iut.ac.ir © BME-PT of these methods as low cost and safe ways should be highlighted. Furthermore, their importance according to their applications discusses. We will also show some properties of them such as morphology and biological activity. Keywords: biopolymers, biocomposites, polymeric nanoparticles, drug delivery systems, biosensors eXPRESS Polymer Letters

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Section: Application Of Biodegradable Nanostructure Polymersmentioning

confidence: 99%

Polymeric nanoparticles: Recent development in synthesis and application

Mallakpour¹,

Behranvand²

2016

Express Polym. Lett.

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“…Optically active and biodegradable PEI was synthesized by the direct polycondensation of equimolecular amounts of aromatic diol (4) and chiral diacid (3), using TsCl/DMF/Py as a condensing agent ( Figure 1) [23].…”

Section: Polymerization Proceduresmentioning

confidence: 99%

Efficient surface modification of MWCNTs with vitamin B1 and production of poly(ester-imide)/MWCNTs nanocomposites containing L-phenylalanine moiety: Thermal and microscopic study

Mallakpour

Soltanian²

2016

Express Polym. Lett.

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Abstract.A simple and efficient method was presented for chemical functionalization of multi-walled carbon nanotubes (MWCNTs) with vitamin B 1 . Poly(ester-imide) (PEI) based nanocomposites were prepared by the incorporation of different amounts of modified MWCNTs (5, 10, 15 wt%) into a chiral and biodegradable PEI by solution blending and ultrasonic dispersion methods. The chiral PEI was produced by a step-growth polymerization of chiral diacid with 4,4!-thiobis(2-tertbutyl-5-methylphenol). Spectroscopic and microscopic techniques were used to examine the chemical structure, morphology and thermal stability of the functionalized MWCNTs and the obtained nanocomposites. The microstructure study revealed the homogeneous dispersion of modified MWCNTs throughout the PEI matrix. Thermogravimetric analysis results confirmed that the heat stability of the prepared composites was improved compared to the pure PEI.

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“…Biodegradable and chiral PEI was synthesized by step-growth polymerization of equimolecular amounts of chiral diacid (3) and TTMP (4), using TsCl/DMF/Py as a condensing agent (Scheme 1), according to the described procedure [24,34].…”

Section: Preparation Of Peimentioning

confidence: 99%

A facile approach towards functionalization of MWCNTs with vitamin B2 for reinforcing of biodegradable and chiral poly(ester-imide) having L-phenylalanine linkages: morphological and thermal investigations

Mallakpour

Soltanian

2015

J Polym Res

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Nanocomposites based on chiral poly(ester-imide) (PEI) and different weight percentages of modified multiwalled carbon nanotubes (MWCNTs) were prepared by solution mixing method. Carboxylated-MWCNTs were functionalized with riboflavin by an efficient, fast and simple strategy under microwave irradiation to improve interfacial interactions and dispersion of CNTs in a PEI matrix. The products were characterized for assessing the spectroscopic, thermal and morphological properties by FT-IR spectroscopy, thermogravimetric analysis (TGA), X-ray diffraction, transmission electron microscopy, and field emission scanning electron microscopy. The TGA results of the obtained nanocomposites proved the enhancement in the thermal stability with an increase in the percentage of functionalized MWCNTs. Microscopic observations showed well-dispersed morphologies and efficient interaction between the functionalized MWCNTs and the polymer matrix.

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Fabrication and in vitro degradation study of novel optically active polymers derived from amino acid containing diacids and 4,4′-thiobis(2-tert-butyl-5-methylphenol)

Cited by 10 publications

References 27 publications

Polymeric nanoparticles: Recent development in synthesis and application

Polymeric nanoparticles: Recent development in synthesis and application

Efficient surface modification of MWCNTs with vitamin B1 and production of poly(ester-imide)/MWCNTs nanocomposites containing L-phenylalanine moiety: Thermal and microscopic study

A facile approach towards functionalization of MWCNTs with vitamin B2 for reinforcing of biodegradable and chiral poly(ester-imide) having L-phenylalanine linkages: morphological and thermal investigations

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