Effect of Branch Point Position on the Linear Rheology of Asymmetric Star Polymers

2008 ◽  
Vol 41 (19) ◽  
pp. 6871-6872 ◽  
Author(s):  
Xue Chen ◽  
Ronald G. Larson
Keyword(s):  
Branch Point ◽  
Star Polymers ◽  
Point Position

Branch-Point Motion in Asymmetric Star Polymers

2005 ◽  
Vol 38 (10) ◽  
pp. 4484-4494 ◽  
Author(s):  
Jung Hun Lee ◽  
Lewis J. Fetters ◽  
Lynden A. Archer
Keyword(s):  
Branch Point ◽  
Star Polymers ◽  
Point Motion

scholarly journals The Role of the Functionality in the Branch Point Motion in Symmetric Star Polymers: A Combined Study by Simulations and Neutron Spin Echo Spectroscopy

2017 ◽  
Vol 51 (1) ◽  
pp. 242-253 ◽  
Author(s):  
Stefan Holler ◽  
Angel J. Moreno ◽  
Michaela Zamponi ◽  
Petra Bačová ◽  
Lutz Willner ◽  
...  
Keyword(s):  
Branch Point ◽  
Spin Echo ◽  
Star Polymers ◽  
Neutron Spin ◽  
Neutron Spin Echo ◽  
Point Motion ◽  
Symmetric Star

Porphyrin-functionalized coordination star polymers and their potential applications in photodynamic therapy

2019 ◽  
Vol 10 (45) ◽  
pp. 6116-6121 ◽  
Author(s):  
Tan Ji ◽  
Lei Xia ◽  
Wei Zheng ◽  
Guang-Qiang Yin ◽  
Tao Yue ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Self Assembly ◽  
Star Polymers ◽  
New Family ◽  
Potential Applications

We present a new family of porphyrin-functionalized coordination star polymers prepared through combination of coordination-driven self-assembly and post-assembly polymerization. Their self-assembly behaviour in water and potential for photodynamic therapy were demonstrated.

Survival of Short and Ultra-Short Locking-Taper Implants Supporting Single Crowns in the Posterior Mandible: A 3-Year Retrospective Study

2020 ◽  
Vol 46 (4) ◽  
pp. 396-406 ◽  
Author(s):  
Giorgio Lombardo ◽  
Annarita Signoriello ◽  
Miguel Simancas-Pallares ◽  
Mauro Marincola ◽  
Pier Francesco Nocini
Keyword(s):  
Retrospective Study ◽  
Bone Loss ◽  
Contact Point ◽  
Implant Survival ◽  
Point Position ◽  
Crestal Bone Loss ◽  
Short Implants ◽  
Single Crown ◽  
Bone To Implant Contact ◽  
Single Crowns

The purpose of this retrospective study was to determine survival and peri-implant marginal bone loss of short and ultra-short implants placed in the posterior mandible. A total of 98 patients received 201 locking-taper implants between January 2014 and January 2015. Implants were placed with a 2-stage approach and restored with single crowns. Clinical and radiographic examinations were performed at 3-year recall appointments. At that time, the proportion of implant survival by length, and variations of crestal bone levels (mean crestal bone loss and mean apical shift of the “first bone-to-implant contact point” position) were assessed. Significance level was set at 0.05. The total number of implants examined 36 months after loading included: 71 implants, 8.0 mm in length; 82 implants, 6.0 mm in length; and 48 implants, 5.0 mm in length. Five implants failed. The overall proportion of survival was 97.51%, with 98.59% for the 8.0-mm implants, 97.56% for the 6.0-mm implants, and 95.83% for the 5.0-mm implants. No statistically significant differences were found among the groups regarding implant survival (P = .73), mean crestal bone loss (P = .31), or mean apical shift of the “first bone-to-implant contact point” position (P = .36). Single-crown short and ultra-short implants may offer predictable outcomes in the atrophic posterior mandibular regions, though further investigations with longer follow-up evaluations are necessary to validate our results.

Self-Immolative Bottlebrush Polypentenamers and their Macromolecular Metamorphosis

2019 ◽  
Author(s):  
William Neary ◽  
Justin Kennemur
Keyword(s):  
Star Polymers ◽  
End To End

The complete depolymerization of a polypentenamer bottlebrush backbone and the kinetic principles involved are discussed. The deconstruction of the bottlebrush occurs from end-to-end in a self-immolative fashion producing individual linear grafts. The phenomenon paints a clearer picture on the original bottlebrush design. Architecture transformations from bottlebrush to linear to star polymers through facile means is explored.<br>

PEO-based electrolytes blended with star polymers with precisely imprinted polymeric pseudo-crown ether cavities for alkali metal ion batteries

2019 ◽  
Vol 576 ◽  
pp. 182-189 ◽  
Author(s):  
Zhuliu Xiao ◽  
Binghua Zhou ◽  
Jirong Wang ◽  
Cai Zuo ◽  
Dan He ◽  
...  
Keyword(s):  
Crown Ether ◽  
Alkali Metal ◽  
Metal Ion ◽  
Star Polymers ◽  
Alkali Metal Ion
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