Synthesis and solution behavior of poly(ɛ-caprolactone) grafted hydroxyethyl cellulose copolymers

Jiang, Chao; Wang, Xinling; Sun, Peng; Yang, Cheng

doi:10.1016/j.ijbiomac.2010.11.007

Cited by 20 publications

(7 citation statements)

References 26 publications

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“…2B ), the methylene proton peaks of PCL can be observed at δ = 3.98 ppm (CH 2 O, e, repeating units), 3.38 ppm (CH 2 OH, e′, end unit), 2.27 ppm (COCH 2 , a′, end unit), 1.52 ppm (COCH 2 , a, repeating unit), 1.41 ppm (CH 2 , b, d), and 1.29 ppm (CH 2 , c). 31 The resonance peaks derived from the protons of AGU of the cellulose backbone appear at δ = 4.47 ppm and 3.53 ppm, attributed to H1 and H5,6,2, respectively. Meanwhile, the signals at δ = 5.51 ppm, 5.37 ppm, and 4.35 ppm correspond to the protons of the residual hydroxyl groups of AGU.…”

Section: Resultsmentioning

confidence: 99%

Homogeneous grafting of cellulose with polycaprolactone using quaternary ammonium salt systems and its application for ultraviolet-shielding composite films

Gao

Jiang

et al. 2018

RSC Adv.

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Microcrystalline cellulose grafted polycaprolactone (MCC-g-PCL) was successfully synthesized by ringopening copolymerization catalyzed by 4-dimethylaminopyridine in a dual tetrabutylammonium acetate/ dimethyl sulfoxide solvent system. A novel ultraviolet-shielding film based on MCC-g-PCL was prepared by introducing graphene oxide (GO). The results obtained showed that the introduction of GO not only obviously influenced the inherent structure of the MCC-g-PCL but remarkably changed the surface morphology of the composite film. Moreover, the GO/MCC-g-PCL composite showed a significant improvement in tensile strength, from 2.63 to 4.55 MPa, as well as elongation-at-break, from 6.4% to 15.5%, compared with the pure MCC-g-PCL film, owing to the strong hydrogen-bonding interaction that physically crosslinked GO with MCC-g-PCL. Importantly, GO/MCC-g-PCL composite films offered an effective high-energy light-shielding capacity; in particular MCC-g-PCL film containing 1.0 wt% GO possessed good absorbance between 200 nm and 300 nm. This study provides a framework for developing cellulose-based ultraviolet-shielding polymers and better understanding the ultravioletshielding mechanism.

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Section: Resultsmentioning

confidence: 99%

Homogeneous grafting of cellulose with polycaprolactone using quaternary ammonium salt systems and its application for ultraviolet-shielding composite films

Gao

Jiang

et al. 2018

RSC Adv.

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“…Now there have appeared large quantities of literatures concerning of this kind of polymers [23][24][25][26][27][28][29]. After partial hydrophobization, the cellulose derivatives can be dissolved in common organic solvents, which makes the further functionalization much easier and better controlled.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of hydrophobic long-chain fatty acylated cellulose and its self-assembled nanoparticles

Guo

Wang

et al. 2012

Polym. Bull.

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In this paper, a series of cellulose-based hydrophobic associating polymers were prepared by homogeneous acylation of microcrystalline cellulose with long-chain acyl chlorides including octanoyl, lauroyl, and palmitoly chlorides in the solvent of N,N-dimethylacetamide/lithium chloride (DMAc/LiCl) using pyridine as acid scavenger. Through controlling the chain length of fatty acyl chlorides and the molar ratio of acyl chlorides vs anhydroglucose unit, the hydrophobic cellulose derivatives with degrees of substitution in the range of 0.02-1.75 were successfully obtained. The chemical structures and properties of these hydrophobic derivatives were characterized by elemental analysis, FT-IR, CP/MAS 13 C NMR, X-ray diffraction, and the thermogravimetry analysis. It was also found that, the cellulose-based polymers achieved an excellent solubility in organic solvents, such as benzene, methylbenzene, and pyridine, with the introduction of hydrophobic side chain into the cellulose backbone. Furthermore, it was found that these hydrophobic cellulose derivatives could self-assemble into spherical nanoparticles in aqueous solution, which indicates a tremendous potential of applications in pharmaceutical and medical fields.

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“…The functionalization and value-added utilization of cellulose is always an important topic in the field of agriculture and food research. , Grafting hydrophobic segments to the cellulose backbone would give rise to amphiphilic copolymers, which can form self-assembled micelles for food applications . Many hydrophobic segments have been successfully grafted onto cellulose or cellulose derivatives, among which grafting biodegradable and biocompatible aliphatic polyesters onto cellulose are of most concern. − Poly( l -lactide) (PLA), as one FDA-approved aliphatic polyester, has been widely used as a biodegradable structural material. In previous studies, the grafting copolymerization of PLA onto cellulose derivatives such as cellulose acetate, ethyl cellulose, and hydroxyethyl or hydroxypropyl cellulose was successfully carried out. − Unfortunately, the biodegradability of these highly modified cellulose derivatives is still a problem .…”

Section: Introductionmentioning

confidence: 99%

Self-Assembly and Paclitaxel Loading Capacity of Cellulose-graft-poly(lactide) Nanomicelles

Guo

Wang

Shu

et al. 2012

J. Agric. Food Chem.

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A series of amiphiphilic cellulose-based graft copolymers (MCC-g-PLA) with various molecular factors were synthesized in ionic liquid BmimCl and characterized by FT-IR, (1)H NMR, (13)C NMR, XRD, and TGA. Their solubility in a variety of solvents was compared. The prepared MCC-g-PLA copolymers can self-assemble into spherical nanomicelles (10-50 nm) in aqueous solution. The self-assembly behaviors of the MCC-g-PLA copolymers were systematically investigated by fluorescence probe. Furthermore, the hydrophobic antitumor drug paclitaxel (PTX) was successfully encapsulated into the MCC-g-PLA micelles. The drug encapsulation efficiency and loading content were found to be as high as 89.30% (w/w) and 4.97%, respectively. Results in this study not only suggest a promising cellulose-based antitumor drug carrier but also provide information for property-directed synthesis of the cellulose graft PLA copolymers.

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Synthesis and solution behavior of poly(ɛ-caprolactone) grafted hydroxyethyl cellulose copolymers

Cited by 20 publications

References 26 publications

Homogeneous grafting of cellulose with polycaprolactone using quaternary ammonium salt systems and its application for ultraviolet-shielding composite films

Homogeneous grafting of cellulose with polycaprolactone using quaternary ammonium salt systems and its application for ultraviolet-shielding composite films

Synthesis and characterization of hydrophobic long-chain fatty acylated cellulose and its self-assembled nanoparticles

Self-Assembly and Paclitaxel Loading Capacity of Cellulose-graft-poly(lactide) Nanomicelles

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