Fracture mechanism of amorphous polyethylene at strain fields

Huang Lan; Cao Dapeng

Chinese︱Feedback︱Save this page

• Elaborating Academic Views 　　　　 • Exchanging Innovative Ideas
• Protecting Intellectual Properties 　　• Fast Sharing Science Papers

Sponsored by the Center for Science and Technology Development of the Ministry of Education
Supervised by Ministry of Education of the People's Republic of China

Home > Papers

Fracture mechanism of amorphous polyethylene at strain fields

Huang Lan,Cao Dapeng * #

State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029

*Correspondence author

#Submitted by

Subject:

Funding: National Basic Research Program （No.2011CB706900）, NSF of China （No.91334203, 21274011, 21121064）, Excellent Talents Funding from BUCT（No.RC1301）, National Scientific Research Funding （No.ZZ1304）

Opened online: 6 August 2014

Accepted by: none

Citation: Huang Lan,Cao Dapeng.Fracture mechanism of amorphous polyethylene at strain fields[OL]. [ 6 August 2014] http://en.paper.edu.cn/en_releasepaper/content/4605105

Owing to the wide application of polymeric materials, understanding the fracture mechanism of amorphous polymer at strain fields is a fundamentally important challenge. In this work, we use molecular dynamics simulations to investigate the uniaxial deformation of amorphous polyethylene and to monitor the polyethylene fracture process induced by stretching. Results indicate that the polyethylene systems with a molecular weight ranging about 600-800 united atoms per chain exhibit the fracture behavior at T<200 K and the strain of 1.0. Further study shows that in the stretching process, the disentanglement and orientation of chains lead to the formation of small cavities in the middle region of the system, and the small cavities subsequently form a large hole, leading to the fracture of the whole system. Definitely, the fracture is determined by the two factors of mobility and entanglement of chains. The polyethylene systems with high chain mobility or high chain entanglement do not fracture. Finally, a schematic diagram is put forward to illustrate the fracture behavior.

Keywords:polymer;amorphous polyethylene; fracture mechanism; strain fields

For this paper

● PDF (0B)
● Revision 0 　　
● Print this paper
● Recommend this paper to a friend
● Add to my favorite list

Saved Papers

Please enter a name for this paper to be shown in your personalized Saved Papers list

Tags

Add yours

Related Papers

Statistics

PDF Downloaded	169
Bookmarked	0
Recommend	5
Comments	Array

Submit your papers

Alert Name:
Alerting to:
Authentication email will be sent to your email address in 24 hours
Frequency:
Email Message Format:	Plain text Graphical(HTML)

Complete the form below and we will recommend the selected titles to your friends on your behalf. * Indicates a required field.
Your name*:
Your email address*:
Recipient's name*:
Recipient's email address*:
(multiple recipient's names and email addresses should be separated with semicolons)
Your comments:	I thought you would find the page(s) useful.

Your name:
Your email address:
Recipient's name:
Recipient's email address:
(multiple recipient's names and email addresses should be separated with semicolons)
Your comments:	I thought you would find this page useful.

Disclaimer: This message was sent to your friend using the "Send it to a friend" facility on the Sciencepaper Online’ WWW site, http://www.paper.edu.cn/en. The Sciencepaper Online is not responsible for the content of this email, and anything said in this email does not necessarily reflect the Sciencepaper Online's views.

	Check out RSS, or use RSS reader to subscribe this item

Saved Papers