Keyword search (4,163 papers available)

"Wood-Adams PM" Authored Publications:

Title Authors PubMed ID
1 Modeling the Ethylene Sequence Length Distribution of Metallocene-Catalyzed Bimodal Polyethylene Sattari M; Kwakye-Nimo S; Inn Y; Karimi PA; Wood-Adams PM; 41078728
ENCS
2 Lamellar orientation at the surface of isotactic polystyrene thin films analyzed by sum frequency generation spectroscopy de Lima BM; Hayes PL; Wood-Adams PM; 36813456
ENCS
3 Photocuring Graphene Oxide Liquid Crystals for High-Strength Structural Materials Riad KB; Hoa SV; Wood-Adams PM; 35755360
ENCS
4 Influence of Polymer Molecular Weight on Chain Conformation at the Polystyrene/Silver Interface de Lima BM; Hayes PL; Wood-Adams PM; 34379428
ENCS
5 Metal Oxide Quantum Dots Embedded in Silica Matrices Made by Flame Spray Pyrolysis Riad KB; Hoa SV; Wood-Adams PM; 34056296
PHYSICS

 

Title:Modeling the Ethylene Sequence Length Distribution of Metallocene-Catalyzed Bimodal Polyethylene
Authors:Sattari MKwakye-Nimo SInn YKarimi PAWood-Adams PM
Link:https://pubmed.ncbi.nlm.nih.gov/41078728/
DOI:10.1021/acsomega.5c06200
Publication:ACS omega
Keywords:
PMID:41078728 Category: Date Added:2025-10-13
Dept Affiliation: ENCS
1 Department of Mechanical, Industrial and Aerospace Engineering, Concordia University, Montreal, Quebec, Canada H3G 1M8.
2 Chevron Phillips Chemical, Bartlesville, Oklahoma 74004, United States.
3 Department of Engineering, University of Northern British Columbia, Prince George, British Columbia, Canada V2N 4Z9.

Description:

The structure of bimodal poly-(ethylene-hexene) is presented in terms of the ethylene sequence length distribution. This distribution is determined by applying statistical modeling to molecular weight and short chain branching distributions obtained from gel permeation chromatography (GPC). We found that the ethylene sequence length distribution of bimodal polyethylene can have features different from molecular weight and short chain branching distributions (SCBD) in terms of bimodality. Using the successive self-nucleation and annealing (SSA) method, we demonstrate the model's ability to elucidate experimental data related to the crystallization and structure of copolymers. It was found that the average lamellar thickness inferred from the SSA results correlated with the weight-averaged ethylene sequence length and the ethylene sequence length distribution bimodal ratio. Combined crystallization of the high and low molecular weight populations was also evaluated through a combination of the ethylene sequence length distribution and the SSA results. The results show that such models are essential to link SSA results to the molecular structure.





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