scholarly journals A closer look at the light-induced changes in the mechanical properties of azobenzene-containing polymers by statistical nanoindentation

2015 ◽  
Vol 3 (42) ◽  
pp. 11055-11065 ◽  
Author(s):  
Luca Sorelli ◽  
Filippo Fabbri ◽  
Jessy Frech-Baronet ◽  
Anh-Duc Vu ◽  
Mario Fafard ◽  
...  
Keyword(s):  
Thin Films ◽  
Mechanical Properties ◽  
Polymer Thin Films ◽  
Large Decrease ◽  
Azo Polymer ◽  
Light Excitation ◽  
Induced Changes

Statistical instrumented nanoindentation measurements demonstrate the large decrease in the viscosity of azo-polymer thin films under light excitation.

Influence of Chain Stiffness on Thermal and Mechanical Properties of Polymer Thin Films

2011 ◽  
Vol 44 (22) ◽  
pp. 9040-9045 ◽  
Author(s):  
Jessica M. Torres ◽  
Chengqing Wang ◽  
E. Bryan Coughlin ◽  
John P. Bishop ◽  
Richard A. Register ◽  
...  
Keyword(s):  
Thin Films ◽  
Mechanical Properties ◽  
Polymer Thin Films ◽  
Thermal And Mechanical Properties ◽  
Chain Stiffness

The Optical and Mechanical Properties of Toluene-TEOS Hybrid Plasma-Polymer Thin Films Deposited by PECVD

2009 ◽  
Vol 55 (5(1)) ◽  
pp. 1780-1784
Author(s):  
Sang-Jin Cho ◽  
In-Seob Bae ◽  
Jin-Hyo Boo ◽  
Sungwoo Lee ◽  
Donggeun Jung
Keyword(s):  
Thin Films ◽  
Mechanical Properties ◽  
Polymer Thin Films ◽  
Plasma Polymer ◽  
Hybrid Plasma ◽  
Optical And Mechanical Properties

Mechanical Properties of UV Irradiated Bio Polymer Thin Films Doped with Titanium Dioxide

2013 ◽  
Vol 748 ◽  
pp. 165-169 ◽  
Author(s):  
M. Rahmah Siti ◽  
Anika Zafiah M. Rus ◽  
S. Nurulsaidatulsyida ◽  
D.A. Talib ◽  
T.M.Y.S. Tuan Ya
Keyword(s):  
Thin Films ◽  
Mechanical Properties ◽  
Tensile Strength ◽  
Titanium Dioxide ◽  
Exposure Time ◽  
Uv Light ◽  
Polymer Thin Films ◽  
Testing Machine ◽  
Hydroxyl Group ◽  
Cumulative Strain

This study reports on the effect of UV-light on the mechanical properties of bio polymer thin films (BPF) doped with 10 % Titanium Dioxide (TiO2). Bio monomer was mixed with 4, 4-methylenebis (phenylisocyanate) (MDI) to produce neat BPF and TiO2 was added to form BPF doped with 10 % TiO2. The film samples were irradiated in UV Accelerated Weatherometer at 50 °C with different exposure time. Universal Testing Machine was used to measure the tensile strength and the fracture surfaces of the tensile specimens were observed by Scanning Electron Microscopy (SEM). The maximum tensile strength of UV irradiated neat BPF is lower than BPF doped with 10 % TiO2 of 3.5 MPa and 4.2 MPa respectively. Stress of neat BPF was decreased from 3.7 MPa to 3.2 MPa after 144 hours of UV exposure at 50 °C while BPF doped with 10 % TiO2 decrease from 4.7 to 3.6 MPa. The Modulus Young of neat BPF is lower than BPF doped with 10 % TiO2 which are 0.32 GPa and 0.33 GPa respectively. The cumulative strain percentage irradiated neat BPF is lower than BPF doped with 10 % TiO2 with 98.7 % and 113.7 % respectively. Unexposed UV light of neat BPF and BPF doped with 10 % TiO2 were observed by SEM shows smooth fracture and brittle fracture respectively. Neat BPF and BPF doped with 10 % TiO2 exposed to UV light show higher ductility property as compared to unexposed BPF. The higher the exposure time of BPF to UV light, revealed systematic increment of tensile strength due to increased crosslink between isocyanate and hydroxyl group.

Photoinduced Heating of Freestanding Azo-Polymer Thin Films Monitored by Scanning Thermal Microscopy

2017 ◽  
Vol 121 (5) ◽  
pp. 3007-3012 ◽  
Author(s):  
Sergey S. Kharintsev ◽  
Elena A. Chernykh ◽  
Alexandr I. Fishman ◽  
Semion K. Saikin ◽  
Alexander M. Alekseev ◽  
...  
Keyword(s):  
Thin Films ◽  
Polymer Thin Films ◽  
Scanning Thermal Microscopy ◽  
Thermal Microscopy ◽  
Azo Polymer

Temperature modeling of laser-irradiated azo-polymer thin films

2004 ◽  
Vol 120 (2) ◽  
pp. 1089-1096 ◽  
Author(s):  
Kevin G. Yager ◽  
Christopher J. Barrett
Keyword(s):  
Thin Films ◽  
Polymer Thin Films ◽  
Temperature Modeling ◽  
Azo Polymer

Temperature effect on photoisomerization induced cubic nonlinearities in azo polymer thin films

2003 ◽  
Author(s):  
Chia-Chen Hsu ◽  
Jian-Hung Lin ◽  
Tzer-Hsiang Huang ◽  
Kenji. Harada
Keyword(s):  
Thin Films ◽  
Temperature Effect ◽  
Polymer Thin Films ◽  
Azo Polymer

scholarly journals Local dynamic mechanical properties in model free-standing polymer thin films

2005 ◽  
Vol 122 (14) ◽  
pp. 144712 ◽  
Author(s):  
Kenji Yoshimoto ◽  
Tushar S. Jain ◽  
Paul F. Nealey ◽  
Juan J. de Pablo
Keyword(s):  
Thin Films ◽  
Mechanical Properties ◽  
Polymer Thin Films ◽  
Dynamic Mechanical Properties ◽  
Local Dynamic ◽  
Free Standing ◽  
Dynamic Mechanical ◽  
Model Free
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