TY - JOUR
T1 - Optimization of processing parameters for the synthesis of low-density polyethylene/organically modified montmorillonite nanocomposites using X-ray diffraction with experimental design
AU - Campos-Requena, Víctor H.
AU - Rivas, Bernabé L.
AU - Pérez, Mónica A.
AU - Contreras, David
AU - Muñoz, Eduardo
PY - 2013/4
Y1 - 2013/4
N2 - The influence of the processing parameters on the synthesis of low-density polyethylene (LDPE)/organically modified montmorillonite (OMM) nanocomposite films was studied using experimental design. Intercalation in the nanocomposites was analysed using X-ray diffraction and verified using atomic force microscopy. Four direct melt processing parameters were studied to obtain surface maps of intercalation in the nanocomposites: concentration of OMM (clay-%), concentration of Polybond® 3149 (compatibilizer-%), mixing temperature (Tmix) and mixing time. An ANOVA validated the polynomial function, and intercalation maps from response surface methodology (RSM) were obtained. The clay-% parameter had the most significant effect, and Tmix showed no significant effect on intercalation (p<0.05). A strong synergic interaction between clay-% and compatibilizer-% was observed, which is not possible to detect using univariate experiments. RSM provides a powerful tool for choosing the best processing conditions that lead to formulations with the highest intercalations by considering the main factors and their interactions.
AB - The influence of the processing parameters on the synthesis of low-density polyethylene (LDPE)/organically modified montmorillonite (OMM) nanocomposite films was studied using experimental design. Intercalation in the nanocomposites was analysed using X-ray diffraction and verified using atomic force microscopy. Four direct melt processing parameters were studied to obtain surface maps of intercalation in the nanocomposites: concentration of OMM (clay-%), concentration of Polybond® 3149 (compatibilizer-%), mixing temperature (Tmix) and mixing time. An ANOVA validated the polynomial function, and intercalation maps from response surface methodology (RSM) were obtained. The clay-% parameter had the most significant effect, and Tmix showed no significant effect on intercalation (p<0.05). A strong synergic interaction between clay-% and compatibilizer-% was observed, which is not possible to detect using univariate experiments. RSM provides a powerful tool for choosing the best processing conditions that lead to formulations with the highest intercalations by considering the main factors and their interactions.
KW - Design of experiments
KW - LDPE
KW - Montmorillonite
KW - Nanocomposites
KW - Processing parameters
KW - Response surface methodology
UR - http://www.scopus.com/inward/record.url?scp=84875533118&partnerID=8YFLogxK
U2 - 10.1002/pi.4465
DO - 10.1002/pi.4465
M3 - Article
AN - SCOPUS:84875533118
VL - 62
SP - 548
EP - 553
JO - Polymer International
JF - Polymer International
SN - 0959-8103
IS - 4
ER -