Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 110 - 116 |
| Number of pages | 7 |
| Journal | Polymer |
| Volume | 59 |
| DOIs | |
| Publication status | Published - 2015 |
Keywords
- Epitaxy
- Nucleating Agent
- Polypropylene
Cite this
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Nucleation of isotactic polypropylene with metal monoglycerolates. / Bhatia, Amita; Jayaratne, Vidura N.; Simon, George P.; Edward, Graham H.; Turney, Terence W.
In: Polymer, Vol. 59, 2015, p. 110 - 116.Research output: Contribution to journal › Article › Research › peer-review
TY - JOUR
T1 - Nucleation of isotactic polypropylene with metal monoglycerolates
AU - Bhatia, Amita
AU - Jayaratne, Vidura N.
AU - Simon, George P.
AU - Edward, Graham H.
AU - Turney, Terence W.
PY - 2015
Y1 - 2015
N2 - Isotactic polypropylene (iPP) has been modified with various nucleating agents, based on layered metal monoglycerolate complexes. Increased crystallisation temperatures (Tc) of iPP were observed in the presence of the isostructural zinc and cobalt layered monoglycerolates (ZMG & CoMG) and the structurally-related calcium monoglycerolate (CaMG), at loadings as low as 200 ppm, indicating highly effective nucleation. Optical microscopic observations showed that iPP nucleates from the thin edges/ sides of CoMG and not from the larger area flat hexagonal/rhombic surfaces of the platelets. X-ray powder diffraction (XRD) studies revealed predominantly selective a-nucleation, although small amounts of the b-phase were observed with CaMG/iPP. The (040) peak of a-phase of iPP was enhanced for nucleated injection moulded samples. Molecular modelling indicated a close structural match between the edges of nucleating platelets and a-iPP in multiple lattice directions, each with a dimensional mismatch of less than 4%.
AB - Isotactic polypropylene (iPP) has been modified with various nucleating agents, based on layered metal monoglycerolate complexes. Increased crystallisation temperatures (Tc) of iPP were observed in the presence of the isostructural zinc and cobalt layered monoglycerolates (ZMG & CoMG) and the structurally-related calcium monoglycerolate (CaMG), at loadings as low as 200 ppm, indicating highly effective nucleation. Optical microscopic observations showed that iPP nucleates from the thin edges/ sides of CoMG and not from the larger area flat hexagonal/rhombic surfaces of the platelets. X-ray powder diffraction (XRD) studies revealed predominantly selective a-nucleation, although small amounts of the b-phase were observed with CaMG/iPP. The (040) peak of a-phase of iPP was enhanced for nucleated injection moulded samples. Molecular modelling indicated a close structural match between the edges of nucleating platelets and a-iPP in multiple lattice directions, each with a dimensional mismatch of less than 4%.
KW - Epitaxy
KW - Nucleating Agent
KW - Polypropylene
UR - http://goo.gl/d6l8J4
U2 - 10.1016/j.polymer.2014.12.038
DO - 10.1016/j.polymer.2014.12.038
M3 - Article
VL - 59
SP - 110
EP - 116
JO - Polymer
JF - Polymer
SN - 0032-3861
ER -