polymer structurepolymers/ PMMAion irradiationspolymethylmethacrylatepolyimideinfrared absorption spectroscopyGeV energiesenhanced productionaromatic compoundsChemical modification of the polymers polymethylmethacrylate (PMMA) and polyimide (PI) irradiated with MeV and GeV ion beams has been studied using infrared ...
The chemical compositions of the styrenic copolymers contain acrylonitrile at levels of 25 and 21%, respectively, which are within the miscibility window for PMMA/SAN and PMMA/ABS blends. Differential scanning calorimetry revealed the glass transition temperature for the polymers and for the elastomeric...
The subject matter of the invention is a process for preparing an assembled chemical structure or a mixture of such structures, this structure having a phase partition, wherein the phases are in parti
However, the removal of PMMA is usually incomplete and leads to surface contamination due to undissolved PMMA residues1–7. These contaminants are trapped on the surface of the transferred 2D materials, resulting in the degradation of the intrinsic properties, and reduce the reliability of devices ...
1 管道组成件 Piping components 1.1 管子 Pipe 管子(按照配管标准规格制造的) pipe 管子(不按配管标准规格制造的其他用管) tube 钢管steel pipe 铸铁管 cast iron pipe 衬里管 lined pipe 复合管 clad pipe 碳钢管 carbon steel pipe 合金钢管 alloy steel pipe ...
Figure 1 Appearance of Methyl methacrylate. Application The principal application, consuming approximately 75% of the Methyl methacrylate, is the manufacture of polymethyl methacrylate acrylic plastics (PMMA). Methyl methacrylate is also used for the production of the co-polymer methyl methacrylate-buta...
1 管道组成件 Piping components 1.1 管子 Pipe 管子(按照配管标准规格制造的) pipe 管子(不按配管标准规格制造的其他用管) tube 钢管steel pipe 铸铁管 cast iron pipe 衬里管 lined pipe 复合管 clad pipe 碳钢管 carbon steel pipe 合金钢管 alloy steel pipe ...
of self-healing polymers. In 2002, Chen et al. [18] introduced a polymer with a cross-linked structure capable of repair through heat application via the Diels–Alder/retro-Diels–Alder (DA/rDA) reaction, marking the inception of the first intrinsic self-healing polymer based on reversible ...
Furthermore, the effectiveness of an IPMC actuator is influenced by water absorption capacity, capacitance, and proton conductivity. To enhance the aforementioned characteristics, bismuth ferrite (BFO) was added to a Nafion matrix, resulting in a porous structure that increases capacitance. Moreover, ...
Via surface-initiatedatom transfer radical polymerization(SI-ATRP)[82–84]in the AAO nanocavities, polymer nanomaterials can be produced inside nanopores of AAO templates. A series of polymers, such as PMMA[85], poly(N-isopropylacrylamide) (PNIPAM)[86,87], poly(acrylic acid) (PAA)[88],PS[89...