[article]
| Titre : |
Preparation and properties of polyaminosiloxane modified polyester waterborne polyurethane |
| Type de document : |
texte imprimé |
| Auteurs : |
Chengshu Xu, Auteur ; M.-T. Wu, Auteur ; L. Ouyang, Auteur ; Z.-S. Cai, Auteur ; Y. Ren, Auteur ; S.-F. Lu, Auteur ; W.-Z. Shi, Auteur |
| Année de publication : |
2020 |
| Article en page(s) : |
p. 139-145 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Analyse thermomécanique dynamique
Caractérisation
Couches minces
Couches minces -- Propriétés mécaniques
Cristallisation
Diffractométrie de rayons X
Fourier, Spectroscopie infrarouge à transformée de
Polyaminosiloxane
Polymères -- Propriétés thermomécaniques
Polymères -- Synthèse
Polymères en émulsion
Polyuréthanes
Thermogravimétrie
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
In this study, a organosilicon modified waterborne polyurethane (WPU) is synthesized with polyethylene glycol 1,4-butanediol adipate ester diol (PBA) to form the soft segment, dimethylolpropionic acid (DMPA) as the hydrophilic chain extender, and isophorone diisocyanate as the hard segment to synthesize the WPU prepolymer, and aminoethyl aminopropyl dimethicone (AEAPS) as the graft chain extender. The properties of the formed WPU films are then characterized by using Fourier transform infrared spectrometry, thermogravimetric analysis, X-ray diffraction, and dynamic mechanical analysis. It is found that when the amount of AEAPS in the WPU is increased from 0 to 30 wt%, the particle size of the AEAPS modified WPU emulsion is increased from 84.8 nm to 271.9 nm and maintained high centrifugal stability. Moreover, the water absorption of the WPU film is reduced from 43.4% to 24.1%, and the hardness is enhanced from 3H to 5H, while the glass-transition temperature (Tg) of the soft segment of the modified WPU shifts from -37.4 °C to -44.3 °C, and the Tg of the hard segment shifts from 73.6 °C to 118.1 °C. Therefore, the overall performance of AEAPS modified WPU is improved |
| Note de contenu : |
- EXPERIMENTAL : Materials - Preparation of WPU
- RESULTS AND DISCUSSION : Infrared spectroscopic analysis - Properties of WPU emulsion - Mechanical properties of WPU film - Water resistance and water contact angle of WPU films - Thermogravimetric analysis of WPU films - Crystallization analysis - Dynamic thermal-mechanical performance analysis of WPU films |
| DOI : |
https://doi.org/10.3139/217.3842 |
| En ligne : |
https://drive.google.com/file/d/10KOZRpGoEVnR02Wn1ADedDadZsuafC5J/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34008 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XXXV, N° 2 (05/2020) . - p. 139-145
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Preparation and properties of polyaminosiloxane modified polyester waterborne polyurethane in INTERNATIONAL POLYMER PROCESSING, Vol. XXXV, N° 2 (05/2020)
