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Orientation direction dependency of cavitation in pre-oriented isotactic polypropylene at large strains

Lu, Ying; Thompson, Glen; Lyu, Dong; Caton-Rose, Philip; Coates, Phil; Men, Yongfeng

Customer publications

Orientation direction dependency of cavitation in pre-oriented isotactic polypropylene at large strains

Lu, Ying; Thompson, Glen; Lyu, Dong; Caton-Rose, Philip; Coates, Phil; Men, Yongfeng

Orientation direction dependency of whitening activated at large strains was studied using four pre-oriented isotactic polypropylene (iPP) samples with different molecular weights stretched along different directions with respect to the pre-orientation (0°, 45°, and 90°) by means of in situ wide-, small-, and ultra-small-angle X-ray scattering techniques. A macroscopic fracture…
One-dimensional oriented microcapacitors in ternary polymer nanocomposites: Toward high breakdown strength and suppressed loss

Song, Silong; Wang, Yao; Luo, Yu; He, Dalong; Abella, Ana; Deng, Yuan

Customer publications

One-dimensional oriented microcapacitors in ternary polymer nanocomposites: Toward high breakdown strength and suppressed loss

Song, Silong; Wang, Yao; Luo, Yu; He, Dalong; Abella, Ana; Deng, Yuan

Poly(vinylidene fluoride) (PVDF) based composites incorporating conductive fillers enable quick achievement of ultrahigh dielectric constant based on percolation theory; however, the accompanying drawbacks high dielectric loss and poor insulation have impeded their practical applications. A novel ternary Bi2S3-BaTiO3/PVDF nanocomposite architecture has been constructed via hot stretching process,…
ORMOSIL–ZrO2 hybrid nanocomposites and coatings on aluminium alloys for corrosion resistance; a sol–gel approach

Smitha, V. S.; Syamili, S. S.; Mohamed, A. Peer; Nair, Balagopal N.; Hareesh, U. S.

Customer publications

ORMOSIL–ZrO2 hybrid nanocomposites and coatings on aluminium alloys for corrosion resistance; a sol–gel approach

Smitha, V. S.; Syamili, S. S.; Mohamed, A. Peer; Nair, Balagopal N.; Hareesh, U. S.

Corrosion resistant coatings are prepared from a hybrid nanocomposite aerogel derived from tri-functional silanes, methyltrimethoxysilane (MTMS) and glycidyloxypropyl trimethoxysilane (GPTMS) and from a zirconium isopropoxide (ZIP) precursor which acts as an inorganic nano-dispersion in an organically modified silane (ORMOSIL) matrix. A series of hybrid compositions of MTMS and GPTMS are…
pH-driven preparation of small, non-aggregated micelles for ultra-stretchable and tough hydrogels

Yu, Xiaofeng; Qin, Zezhao; Wu, Haiyang; Lv, Hongying; Yang, Xiaoniu

Customer publications

pH-driven preparation of small, non-aggregated micelles for ultra-stretchable and tough hydrogels

Yu, Xiaofeng; Qin, Zezhao; Wu, Haiyang; Lv, Hongying; Yang, Xiaoniu

Hydrogels based on deformable micelle crosslinkings can form self-adjustable homogeneous network, which is the critical factor in improving mechanical properties. However, it is a great challenge to prepare these micelle cross-linkings simultaneously with small size and uniform distribution. In this work, the uniform micelle cross-linkings with diameters
Phosphorescent and semiconductive fiber-like micelles formed by platinum(II) complexes and block copolymers

Hu, Linlin; Qu, Fang; Wang, Yongyue; Shen, Junfang; He, Qun; Zhang, Bin; Bu, Weifeng

Customer publications

Phosphorescent and semiconductive fiber-like micelles formed by platinum(II) complexes and block copolymers

Hu, Linlin; Qu, Fang; Wang, Yongyue; Shen, Junfang; He, Qun; Zhang, Bin; Bu, Weifeng

The electrostatic self-assembly of cationic platinum(II) complexes with negatively charged block copolymers in water leads to the formation of fiber-like micelles with a platinum(II)-based ionic core surrounded by a poly(ethylene oxide) corona. The structural details are well documented by various microscopic observations, small-angle X-ray scattering, and wide-angle X-ray scattering. In…
Photo-responsive liquid crystals derived from azobenzene centered cholesterol-based tetramers

Gupta, Monika; Pal, Vaibhav; Pal, Santanu Kumar

Customer publications

Photo-responsive liquid crystals derived from azobenzene centered cholesterol-based tetramers

Gupta, Monika; Pal, Vaibhav; Pal, Santanu Kumar

This paper demonstrates the design and synthesis of azobenzene centred cholesterol based tetramers. A series of eight oligomeric compounds with varying flexible alkyl spacers (n = 1–8) is reported. These compounds displayed enantiotropic and monotropic chiral nematic (N*) mesophases, which were characterized by polarized optical microscopy (POM), differential scanning calorimetry…
Poly(ether ether ketone) grafted with sulfoalkylamine for highly sensitive humidity sensor with small hysteresis

Shao, Zhi; Zhuang, Zhuang; Lin, Haidan; Zhao, Chengji

Customer publications

Poly(ether ether ketone) grafted with sulfoalkylamine for highly sensitive humidity sensor with small hysteresis

Shao, Zhi; Zhuang, Zhuang; Lin, Haidan; Zhao, Chengji

Here, a series of novel poly(ether ether ketone) containing sulfoalkylamine pendant groups (SNPEEK-x) were synthesized by grafting copolymerization reaction. The chemical structure of SNPEEK-x was identified by 1H NMR and the morphology of all films was measured by SAXS and TEM. The impedance varied for five orders of magnitude (from…
Poly(neopentyl glycol 2,5-furandicarboxylate): A Promising Hard Segment for the Development of Bio-based Thermoplastic Poly(ether-ester) Elastomer with High Performance

Chi, Dequan; Liu, Fei; Na, Haining; Chen, Jing; Hao, Chuncheng; Zhu, Jin

Customer publications

Poly(neopentyl glycol 2,5-furandicarboxylate): A Promising Hard Segment for the Development of Bio-based Thermoplastic Poly(ether-ester) Elastomer with High Performance

Chi, Dequan; Liu, Fei; Na, Haining; Chen, Jing; Hao, Chuncheng; Zhu, Jin

With a high melting temperature and good crystallization ability, poly(neopentyl glycol 2,5-furandicarboxylate) (PNF), a polyester derived from bio-based 2,5-furandicarboxylic acid and neopentyl glycol, has been proposed and proved to be a promising hard segment for the development of novel bio-based thermoplastic poly(ether-ester) elastomer (TPEE). The resulting TPEE, namely PNF–PTMG, has…
Polyurethane with an ionic liquid crosslinker: a new class of super shape memory-like polymers

Behera, Prasanta Kumar; Mondal, Prantik; Singha, Nikhil K.

Customer publications

Polyurethane with an ionic liquid crosslinker: a new class of super shape memory-like polymers

Behera, Prasanta Kumar; Mondal, Prantik; Singha, Nikhil K.

This investigation reports on the synthesis of a new class of ionic liquid crosslinked shape-memory polyurethane (PU-IL) based on polycaprolactone diol and 4,4′-methylenebis(phenyl isocyanate) (MDI), which can overcome the major drawbacks of conventional shape-memory polyurethanes. In this case, the ionic liquid crosslinker in PU-IL exhibited not only a higher shape-recovery…