We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Optimization of synthesis parameters of PUF/ENB microcapsules for self‐healing applications using factorial design methodology.
- Authors
de Carvalho Freire, Maria Paula; da Silva, Gabriel Agostinho; Pereira de Paula, Ygor Matheus; Marini, Juliano; Melo, José Daniel Diniz; Costa, Maria Carolina Burgos
- Abstract
This study introduces a systematic experimental approach aimed at enhancing the production process of poly(urea‐formaldehyde) (PUF) microcapsules filled with 5‐ethylidene‐2‐norbonene (ENB) using in situ emulsion polymerization. Essential parameters were identified through a prior Plackett Burman (PB) design, leading to the implementation of a 24‐1 fractional factorial design. The key parameters selected encompassed stirring speed, poly(ethylene‐alt‐maleic anhydride) (EMA) emulsifier content, pH of the reaction, and the quantity of 1‐octanol. Optimal conditions for polymeric microcapsule synthesis were determined using a statistical analysis of the complete factorial design, facilitating the development of representative mathematical models for the process. A comprehensive evaluation of response variables including microcapsule diameter, yield, encapsulated content, stability, and thermal degradation was conducted. Utilizing response surface analysis (RSM), it was determined that the PUF/ENB(2C) condition (stirring at 700 rpm, a reaction pH of 3.0, and EMA content of 0.425 g) resides within the optimized synthesis region, producing microcapsules exhibiting favorable morphological characteristics, yield of 52% and encapsulated content of 80%.
- Subjects
FACTORIAL experiment designs; FACTOR analysis; EMULSION polymerization; SURFACE analysis; MATHEMATICAL models; UREA-formaldehyde resins
- Publication
Journal of Applied Polymer Science, 2024, Vol 141, Issue 24, p1
- ISSN
0021-8995
- Publication type
Article
- DOI
10.1002/app.55508