A5029354213- Polymer crystallization and properties
- biodegradable polymer synthesis and properties
- Polymer Nanocomposites and Properties
- Membrane Separation Technologies
- Advanced Polymer Synthesis and Characterization
- Membrane-based Ion Separation Techniques
- Polymer composites and self-healing
- Advanced Sensor and Energy Harvesting Materials
- Membrane Separation and Gas Transport
- Surface Modification and Superhydrophobicity
- Metal-Organic Frameworks: Synthesis and Applications
- Extraction and Separation Processes
- Electrohydrodynamics and Fluid Dynamics
- Silicone and Siloxane Chemistry
- Bone Tissue Engineering Materials
- Analytical Chemistry and Sensors
- Advanced Materials and Mechanics
- Aerogels and thermal insulation
- Mesoporous Materials and Catalysis
- Advanced Cellulose Research Studies
- Zeolite Catalysis and Synthesis
- Ionic liquids properties and applications
- Polydiacetylene-based materials and applications
- Various Chemistry Research Topics
- Material Properties and Processing
Bandung Institute of Technology
2016-2025
National Cheng Kung University
2012-2021
Tainan University of Technology
2014-2020
Incorporations of ionic liquid (IL) to increase the compatibility and defect-free interface between metal-organic framework (MOF) polymeric membrane have brought membrane-based gas separation technology another level. The addition tailormade MOF/IL composite increases affinity a towards selected as well generates free pores that improve diffusion. This review records various possible types membranes with combinations pair composites for CO2 including their solubilities, interactions,...
Three-dimensional interior structures of poly(lactic acid) (PLA) spherulites have been examined in crystallization with poly(ethylene oxide). A high concentration water-soluble PEO is used as diluent to obtain spherulitic morphologies PLA thick enough films (20–50 μm) for observation. Two different but closely related spherulite patterns (dendritic and spiral banded) both enantiomers studied details, after removal by water etching. The curved dendrites banded are not connected continuous...
Novel approaches and schematic models have been used to provide insights in viewing lamellar assembly ring-banded spherulites of a model polymer poly(ethylene adipate) (PEA) via correlations between the outer-surface three-dimensional interior morphology. When crystallized at 28 °C, PEA thick bulk forms exhibits top surface with bowl-like dome-like height profile centering on its nucleus. The periodical leads not only noticeable ring bands exterior surfaces but also corrugated-board-like...
Controlling oligomer chain length in lactic acid (LA) polycondensation is crucial for producing good properties of poly(lactic acid) (PLA). This study explores the use ultrasonic pretreatment to reduce water content LA, aiming optimize process and enhance quality PLA through ring-opening polymerization (ROP). The methodology involved varying treatment time power during LA pretreatment, followed by at optimized temperature. results indicate that effectively reduces with optimal conditions...
This research aimed to enhance biodiesel stability through catalytic transfer hydrogenation using a biomimetic bimetallic catalyst and glycerol as hydrogen donor. The effects of species, intermediate solvent, feed, form on were investigated. In this study, the examined catalysts Zn-Cr-bicarbonate, Zn-Cr-formate, Zn-Cr-Ni, Cu-Ni/SiO2. Based results, most excellent was presented by Cu-Ni/SiO2 with DMF solvent 10 wt% feed. combination demonstrated significant reduction in iodine (ΔIV = −4.9...
Poly(trimethylene terephthalate) (PTT), a highly birefringent aromatic polyester, has been utilized to understand the mechanisms of crystal assembly into diversified types banded spherulites. PTT exhibits three main spherulites (i.e., concentric, single-spiral, and double-spiral) co-existing in sample films melt-crystallized at 165 °C, regardless thickness. The differ their banding structures, interference color distributions, nuclei geometries (S-shape, Z-shape, or dot-shape). Core...
Poly(trimethylene terephthalate) (PTT) with its unique spherulitic morphologies, highly birefringent features, and crystal stability serves as a good candidate to study polymer crystallization assembly. This review compiles the main findings on in PTT, including birefringence morphology, thermal behavior, well interior structure of PTT banded spherulites, order elucidate origin formation mechanism spherulites. Interior observation through inner anatomy assembly spherulites hidden under top...
Poly(trimethylene terephthalate) (PTT), with large, well-defined, and strongly birefringent spherulites upon crystallization, has been chosen as a model to study the correlation between interior lamellae assembly top surface banding structures. Approaches investigate bulk of banded are needed shed new light on crystallization mechanism polymers. Two etching methods (with two different etchants: methylamine permanganate) were applied identical samples enhance contrast crystal arrangements in...
Unique interior dissection coupled with selective etching techniques for exposing the interiors of poly(trimethylene terephthalate) (PTT) banded spherulites. Three PTT spherulite types are present, originating from different nuclei geometries and corresponding to assemblies lamellae, but all possess similar multishell spheroid layered structures, each their layer thickness exactly equal optical interband spacing. Interior lamellae alternatingly intersected mutually perpendicular orientations...
Differences are seen in the mechanism of lamellar assembly two alternating banded regions (valley and ridge) phthalic acid spherulites solvent-evaporation crystallized at either higher (80 °C) or ambient (28 temperature.
Abstract Membranes are considered promising tools for gas sweetening due to their lower footprint (i.e., area and energy requirement, considering elimination of solvent/absorbent its associated regeneration procedures), ease scale-up. Performing membrane separation is strongly dependent on materials. With a 0.38-nm pore size, the SAPO-34 surpasses upper bond limit CO 2 /CH 4 separation. However, preparing defect-free high-performance zeolite membranes quite challenging. This paper reviews...
Abstract Polymorphism and ring‐banded spherulites in poly(butylene adipate) (PBA) diluted with poly(vinyl acetate) (PVAc) or poly(hydroxyether of bisphenol A) (phenoxy) were studied. For neat PBA, polymorphism occur at overlapped T c = 28–31 °C (4 range). By comparison, ring bands crystallized PBA/PVAc blend remain similar to PBA; while for PBA/phenoxy blend, are completely disrupted (revealed by surface AFM phase images), owing strong interchain interactions between PBA phenoxy. The results...
Neat poly(1,6-hexamethylene adipate) (PHA) is one polyester that never forms ring banded spherulite when crystallized at any crystallization temperatures (Tcs). However, PHA spherulites readily transform from negative-type low Tcs (32–38 °C) to positive-type high (46–48 °C). By utilizing such morphological traits, "artificial" ring-banded can be constructed by step-crystallization cycles 38 and 46 °C, respectively for controlled times. Such artificially bands are analyzed in details using...
ABSTRACT Effects of top confinement and diluent poly(ethylene oxide) (PEO) on poly( l ‐lactic acid) (PLLA) crystal morphology have been investigated. When crystallized at 120 °C, uncovered neat PLLA sample exhibits higher growth rate ringless spherulites; while the covered lower ring‐banded spherulites. As PEO is introduced into PLLA, also undergoes significant changes. For same T c,PLLA = PEO/PLLA blend with composition greater than 25% patterns even in sample. However, much (>80 wt %),...