A5014863069- biodegradable polymer synthesis and properties
- Polymer crystallization and properties
- Polymer composites and self-healing
- Carbon dioxide utilization in catalysis
- Rheology and Fluid Dynamics Studies
- Supramolecular Self-Assembly in Materials
- Bone Tissue Engineering Materials
- Electrical Fault Detection and Protection
- Hydrogels: synthesis, properties, applications
- Additive Manufacturing and 3D Printing Technologies
- Polymer Foaming and Composites
- Carbon and Quantum Dots Applications
- Chemistry and Chemical Engineering
- Spinal Dysraphism and Malformations
- Microplastics and Plastic Pollution
- High voltage insulation and dielectric phenomena
- Advanced Polymer Synthesis and Characterization
- Nerve injury and regeneration
- Thermal Analysis in Power Transmission
- Luminescence and Fluorescent Materials
- Cellular Mechanics and Interactions
- Polymer Nanocomposites and Properties
- Electrospun Nanofibers in Biomedical Applications
- Nanocluster Synthesis and Applications
- Polyoxometalates: Synthesis and Applications
State Key Laboratory of Chemical Engineering
2020-2024
Zhejiang University
2020-2024
University of Akron
2023
Quzhou University
2023
Hunan University
2022
Hangzhou Xixi hospital
2021
Stereocomplex (SC) crystallization between polymer enantiomers has opened a promising avenue for preparing high-performance materials. However, high-crystallinity SCs are difficult to achieve high-molecular-weight (HMW) enantiomeric blends of chiral polymers [e.g., poly(lactic acid)]. Despite extensive studies, why HMW have difficulty in SC not been clarified. Herein, we chose the poly(l-lactic acid)/poly(d-lactic acid) (PLLA/PDLA) 1/1 blend as model system and demonstrated crucial role...
Stereocomplex (SC) crystallization has been an effective way to improve the physical properties of polymers. Poly(lactic acid) (PLA) is a representative stereocomplexable polymer, and PLA-based SC materials present higher strength modulus than common homocrystalline one. However, origins for better mechanical remain unclear. In this work, we prepared PLAs with different initial crystal polymorphs [SC, homocrystal (HC), SC/HC mixture] investigated their multiscale structural evolutions during...
Abstract The growing urgence of information protection promotes continuously the development information‐encryption technique. To date, hydrogels have become an emerging candidate for advanced materials, because their unique stimulus responsiveness. However, current methods to design multi‐level information‐encrypted usually need sophisticated chemistry or experimental setup. Herein, a novel strategy is reported fabricate with encryption/decryption functions through spatially programming...
Polymorphism and crystal transition are common phenomena of semicrystalline polymers. These two behaviors known to be controlled by the nucleation chain mobility polymers, both which constrained entanglement at molecular level. However, role in polymorphic crystallization phase polymers has not been well understood. Herein, we use isotactic polybutene-1 (PB-1) as a model polymer present crucial kinetics solid-solid transition. A series less-entangled PB-1 with different degrees were...
Copolymerization of diacids and diamines can produce copolyamides with diversified physical properties. Due to the interplay between even–even odd–even diamine-diacid units, even–even/odd–even show much different crystal polymorphism phase transition behavior from typical (co)polyamides. Herein, we synthesized novel nylon 5,6 6,6 salts investigated their crystallization kinetics, crystalline structure, behavior. The display isodimorphic behavior, solution-crystallized experience α–γ Brill...
Upon cooling, semicrystalline polymers experience crystallization and form alternatively stacked layers consisting of thin crystal lamellae amorphous ones. The unique morphology, crystallinity, kinetics highly depend on the molecular weight. Therefore, it is deduced that entanglement impacts kinetics, as well hierarchically crystalline structures. However, impact folded chains has not been understood due to experimental difficulties. In this work, chain-folding structures for seven 13C CH3...
Metastable crystal phase of polymorphic polymers can transform into another through a melt recrystallization pathway, which involves the melting original polymorph and nucleation/growth transformed polymorph. Both steps are influenced by chain entanglement. However, role entanglement in melt-recrystallized transition is elusive. Herein, we use polybutene-1 (PB-1) as representative polymer studied effects molecular weight (MW) on transition. A series less-entangled PB-1 with controllable...
Side substitution is an effective method for the chemical modification and functionalization of linear polyesters. The presence side groups can have a profound effect on crystalline structure phase transition semicrystalline Herein, we synthesized long-spaced polyesters with -OH -CH3 various methylene segment lengths studied effects crystal polymorph substituted grow in thermally stable (form I) at higher temperature. However, crystallize metastable hexagonal II) trans chain conformation...
Polymorphism is ubiquitous in polymer crystallization due to the diversified chain conformations and interchain packings crystals. Controlling conformation effective tailoring crystal polymorphism of polymers, which, however, challenging at molecular level. Herein, we have synthesized poly(butylene adipate) (PBA)-based copolymers containing C═C units demonstrated important role trans/cis-C═C tuning polymers. Both PBA-based trans- cis-copolymers show isodimorphic behavior with partial...
The melting of semicrystalline polymers is a typical multistep process and involves series intermediate melt states. However, the structural characteristics polymer unclear. Herein, we choose polymorphic trans-1,4-polyisoprene (tPI) as model system elucidate structures their strong effects on following crystallization process. We find that metastable β crystals tPI first into an state then recrystallize in new upon thermal annealing. shows multilevel order at chain level depending...
Controlled synthesis, competitive crystallization, and crystallization-driven structural organization of thymine-monofunctionalized supramolecular poly(<sc>l</sc>-lactide).
Abstract Transplantation of adult spinal cord tissue (aSCT) is a promising treatment for injury (SCI) basing on various types neural cells and matrix components inside aSCT. However, long-term systemic administration immunosuppressors (e.g. tacrolimus, TAC) required the survival allogeneic tissue, which often associated with severe side effects such as infection, liver damageand renal failure. In this study, triglycerol monostearate (TGM)-based TAC delivery system TAC@TGM) high drug loading...