Li, Zhihang; Kong, Xiangli; Zhou, Xianrong; Zhong, Kui; Zhou, Sumei; Liu, Xingxun
Characterization of multi-scale structure and thermal properties of Indica rice starch with different amylose contents
Fully understanding the relationship between multi-scale structure and thermal properties of rice starch is important for starch-based food processing. Multi-scale structures of Indica rice starch were studied from molecules to aggregation structure. Gel-permeation chromatography (GPC) and high-performance anion-exchange chromatography (HPAEC) both show that the amylopectin from debranched rice…
Cetyltrimethyl Ammonium Bromide Modified Kaolin as a Reinforcing Filler for Natural Rubber
Peter, Roshin; Sreelekshmi, R. V.; Menon, A. R. R.
Cure characteristics, Mooney viscosity and physico-mechanical properties of natural rubber (NR) containing CTAB modified kaolin have been studied. NR mix containing 6 phr (parts per hundred part rubber) of CTAB modified kaolin showed significant increases in cure rate and state of cure as compared to gum NR compound and a…
Cavitation in Isotactic Polypropylene at Large Strains during Tensile Deformation at Elevated Temperatures
Lu, Ying; Wang, Yaotao; Chen, Ran; Zhao, Jiayi; Jiang, Zhiyong; Men, Yongfeng
Two quenched isotactic polypropylene samples with different molecular weight were used to explore the sudden stress whitening activated at large strains during stretching at elevated temperatures via the ultrasmall-angle X-ray scattering technique. This kind of whitening was confirmed to be caused by the creation of cavities within the highly oriented…
“Bottom-up” self-assembly and “cold crystallization” of butterfly shaped tetrabenzofluorene molecules
Sampath, Srinivasan; Boopathi, A. A.; Mandal, A. B.
Butterfly-shaped tetrabenzofluorene (TBF)-based molecules (1 and 2) were designed, synthesized and well characterized using various spectroscopic techniques. The single crystal X-ray structure of 1 shows the presence of intermolecular 3-D π–π stacking interaction and unprecedented “cold crystallization” in polycyclic aromatic molecules. We report for the first time, the “bottom-up”…
Biologically sustainable rubber resin and rubber-filler promoter: a precursor study
Manoharan, Partheban; Naskar, Kinsuk
Enthused by the ever growing demand for sustainable and green based materials in responding to applications based on macromolecules, an attempt was made in seeking a bio-resin (Terpene). Herein, we report the functionalization of bio-resin with natural rubber (NR) to produce new sustainable and greener functional polymer. Bio-resin functionalized NR…
Bioinspired Polylactide Based on the Multilayer Assembly of Shish-Kebab Structure: A Strategy for Achieving Balanced Performances
Yi, Longfei; Luo, Shanshan; Shen, Jiabin; Guo, Shaoyun; Sue, Hung-Jue
Achieving balanced mechanical performances in a polymer material has long been attractive, but it is still a significant challenge. Herein, a nonadditive strategy was proposed by tailoring the crystalline structure of neat polylactide (PLA) through a layer-multiplying extrusion. Compared with normal PLA, the layer-multiplied material exhibited a 50% increase in…
A π-gel scaffold for assembling fullerene to photoconducting supramolecular rods
Nair, Vishnu Sukumaran; Mukhopadhyay, Rahul Dev; Saeki, Akinori; Seki, Shu; Ajayaghosh, Ayyappanpillai
Nonequilibrium self-assembly of molecules holds a huge prospect as a tool for obtaining new-generation materials for future applications. Crystallization of neutral molecules within a supramolecular gel matrix is one example in which two nonequilibrium processes occur orthogonal to each other. On the other hand, electronically interacting donor-acceptor two-component systems are…
A survey on the phase diagram of the system sodium dodecyl sulphate/1-decanol /D2O concerning an eventual coexistence of uniaxial nematic phases
Oliveira-Filho, A. G.; Akpinar, E.; Reis, D.; Neto, A. M. Figueiredo
We examine an eventual coexistence of discotic and calamitic nematic uniaxial phases in the sodium dodecyl sulphate (SDS)/1-decanol (DeOH)/D2O mixture phase diagram. This coexistence is claimed in some previous works. Four different molar ratios / were investigated, where the square brackets represents the molar concentration of the compound, and 33,…
A novel ionomeric polyurethane elastomer based on ionic liquid as crosslinker
Behera, Prasanta Kumar; Usha, K. M.; Guchhait, P. K.; Jehnichen, Dieter; Das, Amit; Voit, Brigitte; Singha, Nikhil K.
A novel ionic liquid crosslinked flexible polyurethane elastomer (PUIL) was successfully synthesized by a one-pot polymerization method. A variety of characterization methods was employed to study the properties of PUIL, and they were compared with those of a linear thermoplastic polyurethane elastomer (TPU) prepared using butanediol (BDO) as a chain…
Anisotropic nanoparticles as templates for the crystalline structure of an injection-molded isotactic polypropylene/TiO2 nanocomposite
Zhang, Peng; Kraus, Tobias
We study the molecular origins of anisotropy in a semicrystalline polymer nanocomposite that is caused by aligned, elongated filler nanoparticles. Our study is based on spatially resolved 2D WAXS/SAXS data that indicates the arrangement of molecules, lamellae, and filler particles in the composite. Isotactic polypropylene (IPP) samples filled with anisotropic…