[PDF] Top 20 Preparation and characterization of semi-flexible thermotropic poly(ester-imide)s

... liquid crystals exhibit mesomorphlsm In solution while thermotropic liquid crystallinity is observed in the neat state upon heating.. In the past 25 years, liquid crystals have found wid[r] ... See full document

... and Characterization of Poly(butylene adipate-co- terephthalate)/Poly(vinyl chloride)/Clay Nanocomposites” in accordance with Universiti Pertanian Malaysia (Higher Degree) Act 1980 and Universiti ... See full document

... in situ polymerization in the rGO/PEA P scaffold, and incorporated through the solvent mixing method in the rGO/PEA B1 and rGO/PEA B2 scaffolds, as well as the coaxial scaffolds. It is possible that the solvent mixing ... See full document

... from poly(β-amino ester) (PAE) were synthesized for applying as drug delivery matrix via a simpli- fied addition polymerization ...The characterization showed that, the obtained network structure of ... See full document

... was changed from 0 to 3 wt%. The character vibrations of Si–O were found at 1,086, 945 and 796 cm -1 , as shown in Fig. 1e. After the surface modification process, the typical stretching vibrations of the C–H were found ... See full document

... However, preparation of a true nanocomposite requires complete dispersion, or exfoliation, of the elementary clay layers within the polymer matrix, without any aggregation into larger units such as tactoids or ... See full document

... feed preparation step is usually necessary. After the preparation of true and dry formulation, it is fed to and extruded in the extruder to be melted, mixed, delivered to the die homogeneously and ... See full document

... 2.2. Microcapsules Preparation The microcapsules of PDVB/OD were prepared by sus- pension polymerization as the procedure shown in Fig- ure 1. The homogeneous organic phase of DVB and OD at the ratio of 50:50% ... See full document

... Kekuatan regangan dan modulus regangan bertambah sehingga 1% kandungan tanah liat dan mula berkurang dengan penambahan kandungan tanah liat kerana struktur taktoid dalam kandungan tanah [r] ... See full document

... 1.2 Biodegradable Polymer Biodegradable polymers have received much attention in the last two decades because of potential applications in the fields related to environmental protection. Biodegradable polymers are a ... See full document

... Unfortunately this emulsion is not stable. To overcome this problem, emulsifier must be added to the emulsion. In this study, we used poly(vinyl alcohol) (PVA) as the emulsifier. The hydro- xyl groups in PVA will ... See full document

... and Poly(3,4-ethylenedi- oxythiophene) (PEDOT) were prepared by in situ chemical polymerization of the 3,4-ethylenedioxythiophene, without the use of solvent or ... See full document

... I certify that an Examination Committee has met on 2010 to conduct the final examination of Mohd Khairulniza Bin Mansor on his Master of Science thesis entitled “Preparati[r] ... See full document

... biodegradable, poly (lactic acid), Muller– Hinton agar Introduction Biocompatible and biodegradable polymers became very important and gained a lot of attention from both biomedical and ecological outlooks in the ... See full document

... the preparation and characteri- zation of two polymers with a pendent dimethoxy ben- zylidene group—one having notable number of aromatic rings, azomethine and an oxygen atom in the back-bone and the other with ... See full document

... The preparation of new types of poly(imide-urea)s (PIUs) with high thermal stability and improved solubility was ...aromatic poly(imide-urea)s (PIU O a-c, PIU S ... See full document

... Accepted Manuscript release α-amino acids and α-hydroxy acids, which are metabolites recognized by the human body. Since both acidic and basice degradation products result, neutralization occurs, preventing an ... See full document

... 28. Yuan, Z.; Chen, H.; Zhang, J.; Zhao, D.; Liu, Y.; Zhou, X.; Li, S.; Shi, P.; Tang, J.; Chen, X. Preparation and characterization of self-cleaning stable superhydrophobic linear low-density ... See full document

... LC polymers of this type, with the mesogenic groups in the backbone are called main chain liquid crystalline polymers, and.. are sub-divided into rigid-rods and semi-flexible LCPs as.[r] ... See full document

... crystals form mesophases only upon super cooling the isotropic liquid phase below the melting temperature. By far a number of[r] ... See full document