Controlled RAFT synthesis of side-chain oleic acid containing polymers and their post-polymerization functionalization

RSC Advances ◽  
2014 ◽  
Vol 4 (99) ◽  
pp. 56415-56423 ◽  
Author(s):  
Binoy Maiti ◽  
Sonu Kumar ◽  
Priyadarsi De
Keyword(s):  
Oleic Acid ◽  
Renewable Resource ◽  
Side Chain ◽  
Synthesis And Characterization ◽  
Cross Linking ◽  
Side Chains ◽  
Double Bonds ◽  
Ene Reaction

We report the synthesis and characterization of well-defined polymers from oleic acid as the bio-renewable resource. Double bonds in oleate side-chains in the polymer are further modified by thiol-ene reaction, epoxidation, and cross-linking.

Study on Synthesis and Characterization of Unsaturated Polyester by Enzyme-Catalyzed

2013 ◽  
Vol 575-576 ◽  
pp. 67-70
Author(s):  
Fen Juan Shao ◽  
Qun Yang ◽  
Lan Ying Li ◽  
Da Nian Lu
Keyword(s):  
High Temperature ◽  
Unsaturated Polyester ◽  
Soxhlet Extraction ◽  
Side Chain ◽  
Synthesis And Characterization ◽  
Cross Linking ◽  
Cross Link ◽  
H Nmr ◽  
Ft Ir

Unsaturated polyester was prepared with adipic acid (AA), fumaric acid (FA), itaconic acid (IA) and 1, 6-hexanediol (HD) by enzyme-catalyzed polmerization. The insoluble gel fraction (Qs), as the cross-linking degree of cured unsaturated polyesters which could be self-cross-linked at high temperature through C=C in it, was got by Soxhlet Extraction. The properties were investigated by FT-IR, 1H NMR, DSC, XRD and so on. The results indicated that the C=C in unsaturated diacids reduced the acitvity of N435, which affected the polmerization. With the introduction of C=C of IA or FA, the Mn of polyester reduced. The C=C could self-cross-link under high temperature for lengthy time. The higher the temperature and the longer the time, the Qs increased. As the C=C of IA was in the side chain, it could move easily. Then Qs of poly (AA-co-IA-co-HD) was higher than ploy (AA-co-FA-co-HD). With the increased content of unsaturated diacid, Qs increased. And the biodegradation of cross-linked polyesters became worse.

Synthesis and characterization of chiral PEDOT enantiomers bearing chiral moieties in side chains: chiral recognition and its mechanism using electrochemical sensing technology

RSC Advances ◽  
2016 ◽  
Vol 6 (14) ◽  
pp. 11536-11545 ◽  
Author(s):  
Liqi Dong ◽  
Long Zhang ◽  
Xuemin Duan ◽  
Daize Mo ◽  
Jingkun Xu ◽  
...  
Keyword(s):  
Chiral Recognition ◽  
Electrochemical Sensing ◽  
Side Chain ◽  
Synthesis And Characterization ◽  
Side Chains ◽  
Sensing Technology

This manuscript reports a couple of novel polymers of side-chain functionalized PEDOT. The new polymers can be employed to successfully recognize 3,4-dihydroxyphenylalanine enantiomers and we also discuss the mechanism of chiral recognition.

Synthesis and Characterization of Urethane Side Chain Substituted Diketopyrrolopyrrole

2021 ◽  
Vol 13 (2) ◽  
pp. 635-642
Author(s):  
S. Dharmapurikar ◽  
J. Aher ◽  
A. Puyad ◽  
G. K. Kakade ◽  
V. G. Kalalawe ◽  
...  
Keyword(s):  
Optical Properties ◽  
Hydrogen Bonding ◽  
Alkyl Chain ◽  
Side Chain ◽  
Synthesis And Characterization ◽  
Side Chains ◽  
Easy Method ◽  
Secondary Interaction ◽  
Sensing Applications

The synthesis of Diketopyrrolopyrrole (DPP) having secondary interaction in the side chain explores its possibility to use in electronic and sensing applications. Herein we report easy method to engineer side chains of DPP. The hydrogen bonding is introduced on the side chain by substitution of urethane side chains on Diketopyrrolopyrrole (DPPurethane).The urethane side chain comprises a branched alkyl chain with good yields and purities. The DPPurethane characterized by NMR and IR, optical properties along with energy minimized structure were studied.  

scholarly journals Synthesis and Characterization of a Bioconjugate Based on Oleic Acid and L-Cysteine

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1791
Author(s):  
Marco Vizcarra-Pacheco ◽  
María Ley-Flores ◽  
Ana Mizrahim Matrecitos-Burruel ◽  
Ricardo López-Esparza ◽  
Daniel Fernández-Quiroz ◽  
...  
Keyword(s):  
Oleic Acid ◽  
Materials Science ◽  
Critical Micellar Concentration ◽  
Synthesis And Characterization ◽  
New Materials ◽  
Visible Spectroscopy ◽  
Amide Bonds ◽  
Transmission Electron ◽  
Self Assembled

One of the main challenges facing materials science today is the synthesis of new biodegradable and biocompatible materials capable of improving existing ones. This work focused on the synthesis of new biomaterials from the bioconjugation of oleic acid with L-cysteine using carbodiimide. The resulting reaction leads to amide bonds between the carboxylic acid of oleic acid and the primary amine of L-cysteine. The formation of the bioconjugate was corroborated by Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, and nuclear magnetic resonance (NMR). In these techniques, the development of new materials with marked differences with the precursors was confirmed. Furthermore, NMR has elucidated a surfactant structure, with a hydrophilic part and a hydrophobic section. Ultraviolet-visible spectroscopy (UV-Vis) was used to determine the critical micellar concentration (CMC) of the bioconjugate. Subsequently, light diffraction (DLS) was used to analyze the size of the resulting self-assembled structures. Finally, transmission electron microscopy (TEM) was obtained, where the shape and size of the self-assembled structures were appreciated.

scholarly journals Synthesis and Characterization of Clay Polymer Nanocomposites of P(4VP-co-AAm) and Their Application for the Removal of Atrazine

Polymers ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 721 ◽  
Author(s):  
Jorge A. Ramírez-Gómez ◽  
Javier Illescas ◽  
María del Carmen Díaz-Nava ◽  
Claudia Muro-Urista ◽  
Sonia Martínez-Gallegos ◽  
...  
Keyword(s):  
Polymer Nanocomposites ◽  
Nanocomposite Materials ◽  
Synthesis And Characterization ◽  
Cross Linking ◽  
X Ray Diffraction ◽  
Numerous Species ◽  
X Ray ◽  
Different Types ◽  
Synthesized Materials

Atrazine (ATZ) is an herbicide which is applied to the soil, and its mechanism of action involves the inhibition of photosynthesis. One of its main functions is to control the appearance of weeds in crops, primarily in corn, sorghum, sugar cane, and wheat; however, it is very toxic for numerous species, including humans. Therefore, this work deals with the adsorption of ATZ from aqueous solutions using nanocomposite materials, synthesized with two different types of organo-modified clays. Those were obtained by the free radical polymerization of 4-vinylpyridine (4VP) and acrylamide (AAm) in different stoichiometric ratios, using tetrabutylphosphonium persulfate (TBPPS) as a radical initiator and N,N′-methylenebisacrylamide (BIS) as cross-linking agent. The structural, morphological, and textural characteristics of clays, copolymers, and nanocomposites were determined through different analytical and instrumental techniques, i.e., X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and thermogravimetric analysis (TGA). Adsorption kinetics experiments of ATZ were determined with the modified and synthesized materials, and the effect of the ratio between 4VP and AAm moieties on the removal capacities of the obtained nanocomposites was evaluated. Finally, from these sets of experiments, it was demonstrated that the synthesized nanocomposites with higher molar fractions of 4VP obtained the highest removal percentages of ATZ.

Synthesis and characterization of block copolythiophene with hexyl and triethylene glycol side chains

Polymer ◽  
2011 ◽  
Vol 52 (17) ◽  
pp. 3687-3695 ◽  
Author(s):  
Tomoya Higashihara ◽  
Kaoru Ohshimizu ◽  
Yecheol Ryo ◽  
Takuya Sakurai ◽  
Ayumi Takahashi ◽  
...  
Keyword(s):  
Triethylene Glycol ◽  
Synthesis And Characterization ◽  
Side Chains

Synthesis and characterization of two isomeric liquid crystal series with reactive double bonds

1993 ◽  
Vol 15 (5) ◽  
pp. 689-700 ◽  
Author(s):  
R. M. Tejedor ◽  
J. L. Rodríguez ◽  
L. Oriol ◽  
J. L. Serrano
Keyword(s):  
Liquid Crystal ◽  
Synthesis And Characterization ◽  
Double Bonds
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