Preparation of polysaccharide supramolecular films by vine-twining polymerization approach

Kadokawa, Jun‐ichi; Nomura, Shintaro; Hatanaka, Daisuke; Yamamoto, Katsuhiro

doi:10.1016/j.carbpol.2013.06.038

Cited by 24 publications

(18 citation statements)

References 46 publications

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“…Amylose as a linear polysaccharide offers interesting properties due to its helical conformation which enables amylose to act as a host molecule. The guest molecules range from small molecules such as iodine to big molecules such as polymers . The complexation between amylose and polymer leads to a versatile approach to prepare block copolymers with the capability of self‐organizing.…”

Section: Introductionmentioning

confidence: 99%

Inclusion Complexes Between Polytetrahydrofuran‐b‐Amylose Block Copolymers and Polytetrahydrofuran Chains

Rachmawati

Woortman

Kumar

et al. 2015

Macromolecular Bioscience

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Amylose inclusion complexes are prepared by complexation of synthetic amylose having a covalently attached PTHF block (PTHF-b-amylose) with guest polytetrahydrofuran of molecular weights of 650 and 1000 g · mol(-1) (PTHF650 and PTHF1000). Differential Scanning Calorimetry (DSC) analysis of the products shows a characteristic melting peak of the complexes at 140 °C. Compared to PTHF650, the PTHF1000 displays lower complexing ability with PTHF-b-amylose which is indicated by visible amylose retrogradation. The possible structures of the resulting products are estimated from Thermo Gravimetric Analysis (TGA) which reveals differences between PTHF-b-amylose and the corresponding complexes. In addition, X-Ray Diffraction (XRD) analysis demonstrates that the resulting structures of the complexes consist of 6-fold V-amylose helices. The results are confirmed further with Small Angle X-Ray Scattering (SAXS) diffractions which show that formation of inclusion complexes increases the crystalline size and regularity of the complex. There is a strong indication that the covalently attached PTHF block also induces the formation of V-amylose by residing in between the amylose blocks. In this case, the resulting structure of the complex is likely affected by both the complexation between amylose block and the added PTHF and by the in situ self-assembly of the block copolymers.

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Section: Introductionmentioning

confidence: 99%

Inclusion Complexes Between Polytetrahydrofuran‐b‐Amylose Block Copolymers and Polytetrahydrofuran Chains

Rachmawati

Woortman

Kumar

et al. 2015

Macromolecular Bioscience

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“…37 The condensation of the product with carboxylate groups on PGA was conducted, using the condensing agent 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (EDC)/N-hydroxysuccinimide (NHS) in water/ DMSO to produce PGA-g-PCL (Fig. 37 The condensation of the product with carboxylate groups on PGA was conducted, using the condensing agent 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (EDC)/N-hydroxysuccinimide (NHS) in water/ DMSO to produce PGA-g-PCL (Fig.…”

Section: Preparation Of Supramolecular Hydrogels By Vine-twining Polymentioning

confidence: 99%

“…[24][25][26][27] In the reaction, D-glucose units are successively transferred from G-1-P to the non-reducing 4-OH propagating end of a α-(1 → 4)-glucan chain, leading to chain elongation accompanied by the liberation of inorganic phosphates (Pi). 36,37 The hydrophilic main chains of PAA and CMC acted as components in the hydrogels, whereas the hydrophobic graft polyesters of PVL and PCL were found to behave as guest polymers for inclusion complexation by amylose in the vine-twining polymerization. 28,29 A geometrical representation of this system is similar to the way that plant vines grow to twine around a supporting rod.…”

Section: Introductionmentioning

confidence: 99%

Preparation of multiformable supramolecular gels through helical complexation by amylose in vine-twining polymerization

et al. 2015

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In this study, we prepared mutiformable functional supramolecular gels by vine-twining polymerization using poly(γ-glutamic acid-graft-ε-caprolactone) (PGA-g-PCL) as a new guest polymer, with subsequent procedures of lyophilization and exchange of dispersion media. When the phosphorylase-catalyzed enzymatic polymerization of the monomer α-D-glucose 1-phosphate from a maltoheptaose primer was carried out in the presence of PGA-g-PCL according to the vine-twining polymerization method, a supramolecular hydrogel was obtained. The resulting hydrogel, purified by soaking in water, had the self-standing properties. Macroscopic interfacial healing was achieved by the formation of inclusion complexes at the interface between two hydrogel pieces through enzymatic polymerization. Cryogels were obtained by the lyophilization of the hydrogels; XRD analysis of the cryogel indicated the presence of inclusion complexes of amylose with PCL graft chains in intermolecular (PGA-g-PCL)s, which acted as cross-linking points for hydrogelation. Porous morphologies were seen in scanning electron micrographs of the cryogels. Furthermore, ion gels were fabricated by soaking the hydrogels in the ionic liquid of 1-butyl-3-methylimidazolium chloride. The mechanical properties of the cryo-and ion gels were evaluated by compressive and tensile testing, respectively. † Electronic supplementary information (ESI) available. See

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“…On the basis of the findings, we also evaluated the mechanical properties of amylose triacetate (ATA)–PTHF and ATA–PLLA supramolecular polymeric films as a function of temperature, which were found to be obtained by acetylation of the original amylose inclusion supramolecular polymers. In a previous study, we also prepared a supramolecular film via the formation of a hydrogel by the vine-twining polymerization approach using the appropriately designed graft copolymer (i.e., carboxymethyl cellulose- graft -PCL) [35]. In this system, the enzymatically produced amyloses formed inclusion complexes with grafted PCL chains in the intermolecular graft copolymers, which acted as cross-linking points, resulting in network structures.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Stability of Amylose Inclusion Complexes Depending on Guest Polymers and Their Application to Supramolecular Polymeric Materials

et al. 2017

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This paper describes the evaluation of the stability of amylose–polymer inclusion complexes under solution state in dimethyl sulfoxide (DMSO) depending on guest polymers. The three complexes were prepared by the vine-twining polymerization method using polytetrahydrofuran (PTHF), poly(ε-caprolactone) (PCL), and poly(l-lactide) (PLLA) as guest polymers. The stability investigation was conducted at desired temperatures (25, 30, 40, 60 °C) in DMSO solutions of the complexes. Consequently, the amylose–PTHF inclusion complex was dissociated at 25 °C, while the other complexes were stable under the same conditions. When the temperatures were elevated, the amylose–PCL and amylose–PLLA complexes were dissociated at 40 and 60 °C, respectively. We also found that amylose inclusion supramolecular polymers which were prepared by the vine-twining polymerization using primer-guest conjugates formed films by the acetylation of amylose segments. The film from acetylated amylose–PLLA supramolecular polymer had higher storage modulus than that from acetylated amylose–PTHF supramolecular polymer, as a function of temperature.

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Preparation of polysaccharide supramolecular films by vine-twining polymerization approach

Cited by 24 publications

References 46 publications

Inclusion Complexes Between Polytetrahydrofuran‐b‐Amylose Block Copolymers and Polytetrahydrofuran Chains

Inclusion Complexes Between Polytetrahydrofuran‐b‐Amylose Block Copolymers and Polytetrahydrofuran Chains

Preparation of multiformable supramolecular gels through helical complexation by amylose in vine-twining polymerization

Evaluation of Stability of Amylose Inclusion Complexes Depending on Guest Polymers and Their Application to Supramolecular Polymeric Materials

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