[article]
| Titre : |
Modeling of molecular weight of acrylic resins using full factorial techniques |
| Type de document : |
texte imprimé |
| Auteurs : |
Nishant N. Prabhu, Auteur ; Deepak Shanbhag, Auteur |
| Année de publication : |
2009 |
| Article en page(s) : |
p. 53-64 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Initiator half life at the processing temperature, initiator concentration and monomer feed rate are the factors governing the molecular weight and the viscosity properties of an acrylic resin in "drip-feed" process. Contribution of each of these factors on the molecular weight of the polymer was determined using full factorial analysis. Twelve resin batches were processed as per the statistical design of experiments. The molecular weight distribution of these acrylic resins were recorded by GPC. The data was analysed by full factorial analysis. A mathematical equation was obtained correlating the molecular weight of the polymer with the levels which these three parameters are set during the processing. Using this mathematical equation, the molecular wight was predicted for a batch where these parameters were set at particular values. The batch was processed and its molecular weight was determined by GPC. The observed value was found to be in good agreement with the value predicted by the equation. Thus, this statistical tool can be used for predicting the molecular weight of the polymer from the set parameters. The parameters can now be set based on other consideration such as energy consumption, cost of formulation and cycle time and molecular weight can be predicted using the equation. The parameters can be further finetuned using the equation to get desired molecular weight thus eliminating the requirement of processing of large number of batches. |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6788 |
in PAINTINDIA > Vol. LIX, N° 4 (04/2009) . - p. 53-64
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Modeling of molecular weight of acrylic resins using full factorial techniques in PAINTINDIA, Vol. LIX, N° 4 (04/2009)
