Abstract: A method of preparing 3,4-ethylenedioxythiophene is provided. The preparation is performed by microwave heating to greatly increase the yield and decrease the reaction time, energy consumption, solvent usage, and environmental damage.

Abstract: A water-insoluble polyglutamic acid (PGA) fiber and a preparation method thereof are provided. In the preparation method, the PGA is cross-linked by a cross-linking agent and then passes through a spinning nozzle to form PGA fibers. Therefore, the highly water-absorbing PGA, which cannot be spun by conventional methods, can be spun to form PGA fibers and maintain the high water-absorption ability.

Abstract: A multi-layer antimicrobial wound dressing includes a wound-contacting layer and an antimicrobial layer. The wound contacting layer includes a biocompatible fibrous matrix that is made of an anionic polymer, and the antimicrobial layer is made of a cationic polymer that is connected to the wound-contacting layer via anionic-cationic interaction between the anionic polymer of the fibrous matrix and the cationic polymer of the antimicrobial layer.

Abstract: A method for forming a microstructure includes: (a) forming a photocurable layer on a substrate, the photocurable layer including at least one photocurable compound that has a photocurable functional group equivalent weight ranging from 70 to 700 g/mol; (b) covering partially the photocurable layer using a patterned mask; (c) exposing the photocurable layer through the patterned mask using a first light source so that the photocurable layer is cured at first regions which are exposed; (d) removing the patterned mask; and (e) illuminating the photocurable layer using a second light source to cure second regions of the photocurable layer which have not been cured. The first and second regions have different surface heights and provide a surface roughness for the microstructure.

Abstract: A method for preparing a polyglutamic acid (?-PGA) fiber having antibacterial and water absorption properties is provided. The method includes providing a ?-PGA fiber and immersing it in a sodium hypochlorite solution. A relation exists between an immersing time T of the ?-PGA fiber and a concentration X of the sodium hypochlorite solution as shown in the formula below: 10.2?(T?64.55X2+50X)?15.2, wherein X is 0.006-0.4 wt %.

Abstract: A method of preparing a water-soluble and biodegradable antimicrobial agent is provided. The method includes treating a polypeptide compound with sodium hypochlorite for at least 1 min, such that the polypeptide compound has at least one N-halamine group and has good antimicrobial effect. By using the method of the present invention, a chemical synthesis process is not required and an organic solvent is not required either, and thus, an antimicrobial agent having high water solubility, biodegradability, non-toxicity, good sterilization effect, and regeneration can be prepared with reduced harms to the environment.

Abstract: A water-soluble and biodegradable antimicrobial agent is provided, comprising a polymer composed of a segment A and a segment B, in which, the segment A has the following formula I: the segment B has the following formula II: wherein the segment A and the segment B in the polymer have a molar ratio of 1:0.007-1.2, and n is 0 or 1, m is an integer of 0-2, m+n?0, X is H, Na, K, NH4, ½Ca, or ½Mg, and Y is Cl, Br, or I.

Abstract: A polyglutamic acid (?-PGA) fiber having antibacterial property and high water absorptivity is provided. A main component of the ?-PGA fiber includes a modified ?-PGA, and the modified ?-PGA is a polymer consisting of a ?-glutamic acid segment and a ?-modified glutamic acid segment, in which the modified glutamic acid segment has a formula as shown below: wherein X is H or Na, and Y is Cl, Br or I, and wherein a molar ratio of the modified ?-glutamic acid segment to the ?-glutamic acid segment is not lower than 0.05.

Abstract: The application discloses a Titanium oxide composition and the application thereof. The mentioned Titanium oxide composition comprises Titanium co-precipitate(s), organic acid, diol, and water. According to this application, a catalyzed poly-esterification with said Titanium oxide composition is also disclosed. The mentioned polyesterification comprises a step of adding said Titanium oxide composition into at least one stage selected from slurry stage, esterification stage, and polycondensation stage.

Abstract: A biocidal polymer including at least one repeating unit of formula (A): wherein: R1 in each occurrence independently represents a divalent aromatic group containing 6 to 30 carbon atoms, a C2-C16 alkylene group or an alkylene biscyclohexyl; Y in each occurrence independently represents an oxygen atom or a sulfur atom; and Z1, Z2, Z3 and Z4 in each occurrence independently represent a hydrogen atom or a halogen atom; wherein at least one of Z1, Z2, Z3 and Z4 in the at least one repeating unit of formula (A) is a halogen atom.

Abstract: A fiber modifier for improving thermo-bonding affinity of a composite fiber to a natural fiber includes a blend of maleic anhydride and a copolymer component selected from a copolymer of ethylene and acrylic acid, a copolymer of ethylene and methacrylic acid, and combinations thereof. A core and sheath composite fiber including a sheath component made from a fiber composition that contains the above fiber modifier is also disclosed.

Abstract: A method for making an optical device includes the steps of: rubbing an orienting film so as to stretch the molecular structure thereof and so as to permit the molecular units of the molecular structure to be aligned along a first axis and to permit the orienting space between each adjacent pair of the molecular units of the molecular structure to be oriented in a direction parallel to a second axis; and forming an optical anisotropical layer on the orienting film by applying a liquid crystal film of rod-like molecules on the orienting film which orients the rod-like molecules by virtue of spatial effect of the molecular units and the orienting spaces.

Abstract: The application discloses a Titanium oxide composition and the application thereof. The mentioned Titanium oxide composition comprises Titanium co-precipitate(s), organic acid, diol, and water. According to this application, a catalyzed poly-esterification with said Titanium oxide composition is also disclosed. The mentioned polyesterification comprises a step of adding said Titanium oxide composition into at least one stage selected from slurry stage, esterification stage, and polycondensation stage.

Abstract: A method for making a polarizer-and-compensator assembly includes: (a) forming an alignment film on a releasable substrate; (b) forming a liquid crystal film on the alignment film so as to form a compensator layer on the releasable substrate; and (c) transferring the compensator layer from the releasable substrate to a polarizer plate by removing the releasable substrate from the compensator layer and attaching the alignment film to the polarizer plate.

Abstract: A polysiloxane-based prepolymer of a three-dimensional network structure produced by hydrolysis-condensation of a first mixture having a tetra-alkoxysilane compound, an ethylenically unsaturated organosiloxane monomer, and a hydrophilic silicon-containing polyfunctional monomer. A hydrogel is prepared by polymerizing a second mixture having the aforesaid polysiloxane-based prepolymer, an acrylated silicon-containing monomer, and an ethylenically unsaturated hydrophilic monomer.

Abstract: A method for dyeing a modified polyester fiber is provided. A polyester composition is melt blended with a modifying agent to form a thermoplastic composition. The modifying agent is an aliphatic-aromatic co-polyester, and present in an amount of about 1 to 16 parts by weight per 100 parts by weight of the thermoplastic composition. The thermoplastic composition is melt spun to obtain the modified polyester fiber, and the modified polyester fiber is dyed with a disperse dye at a temperature between about 100° C. and about 130° C.

Abstract: A water-insoluble polyglutamic acid (PGA) fiber and a preparation method thereof are provided. In the preparation method, the PGA is cross-linked by a cross-linking agent and then passes through a spinning nozzle to form PGA fibers. Therefore, the highly water-absorbing PGA, which cannot be spun by conventional methods, can be spun to form PGA fibers and maintain the high water-absorption ability.

Abstract: A polyester based blend includes: a polyester to be formed into a polymer matrix for a packaging article when the polyester based blend is melted and extruded; an oxidative catalyst to be dispersed in the polymer matrix; and an additive of an aldehyde that is to be dispersed in the polymer matrix, that is catalytically reactive with oxygen at room temperature in the presence of the oxidative catalyst, and that has a melting point greater than room temperature. A packaging article made from the melt-extruded polyester based blend is also disclosed.