Control of Corona Composition and Morphology in Aggregates of Mixtures of PS-b-PAA and PS-b-P4VP Diblock Copolymers: Effects of pH and Block Length

Langmuir ◽  
2014 ◽  
Vol 30 (17) ◽  
pp. 5031-5040 ◽  
Author(s):  
Renata Vyhnalkova ◽  
Axel H. E. Müller ◽  
Adi Eisenberg
Keyword(s):  
Diblock Copolymers ◽  
Block Length ◽  
Effects Of Ph

Controlled Crystallization of Diblock Copolymers on Carbon Materials: Effect of Block Length

2022 ◽  
pp. 152487
Author(s):  
Xi Zhang ◽  
Panpan Dang ◽  
Bo Deng ◽  
Xiaochao Xia ◽  
Kaiti Wang ◽  
...  
Keyword(s):  
Diblock Copolymers ◽  
Carbon Materials ◽  
Block Length ◽  
Controlled Crystallization

Mechanical properties and hydrolytic degradation of methoxy poly(ethylene glycol)-b-poly(DL-lactide-coglycolide- co-ε-caprolactone) diblock copolymer films

e-Polymers ◽  
2008 ◽  
Vol 8 (1) ◽  
Author(s):  
Nongnit Morakot ◽  
Jirasak Threeprom ◽  
Yodthong Baimark
Keyword(s):  
Mechanical Properties ◽  
Weight Loss ◽  
Ethylene Glycol ◽  
Diblock Copolymers ◽  
Hydrolytic Degradation ◽  
Size Exclusion ◽  
Block Length ◽  
Poly Ethylene Glycol ◽  
Scanning Calorimetry ◽  
Poly Ethylene

AbstractBiodegradable films of methoxy poly(ethylene glycol)-b-poly(DL-lactideco- glycolide-co-ε-caprolactone) diblock copolymers (MPEG-b-PDLLGCL) were prepared by solution casting method. Effects of MPEG block length and DLL:G:CL ratio of the MPEG-b-PDLLGCL films on their mechanical properties and hydrolytic degradation were studied and discussed. It was found that the mechanical properties of films were strongly dependent on glass transition temperatures (Tg) of the diblock copolymers. The hydrolytic degradation was investigated in phosphatebuffered solution at 37°C. The degraded films were characterized using gravimetry (%water uptake and %weight loss), 1H-NMR spectroscopy, differential scanning calorimetry and size exclusion chromatography. The %weight loss of the degraded films increased and molecular weight decreased on increasing the MPEG block length and incorporating the G and CL units, according to their %water uptakes. The MPEG content of the degraded film decreased and the Tg increased with hydrolytic degradation time.

Crystallization-driven one-dimensional self-assembly of polyethylene-b-poly(tert-butylacrylate) diblock copolymers in DMF: effects of crystallization temperature and the corona-forming block

Soft Matter ◽  
2016 ◽  
Vol 12 (1) ◽  
pp. 67-76 ◽  
Author(s):  
Bin Fan ◽  
Lei Liu ◽  
Jun-Huan Li ◽  
Xi-Xian Ke ◽  
Jun-Ting Xu ◽  
...  
Keyword(s):  
Crystallization Temperature ◽  
Self Assembly ◽  
Diblock Copolymers ◽  
Block Length ◽  
One Dimensional ◽  
Cylindrical Micelles

Crystallization temperature and the PtBA block length affect the growth of crystalline PE-b-PtBA cylindrical micelles, and quasi-living growth can be achieved.

scholarly journals Crystallization and morphological transition of poly(l-lactide)–poly(ε-caprolactone) diblock copolymers with different block length ratios

RSC Advances ◽  
2017 ◽  
Vol 7 (36) ◽  
pp. 22515-22523 ◽  
Author(s):  
Weiqiang Han ◽  
Xia Liao ◽  
Qi Yang ◽  
Guangxian Li ◽  
Bin He ◽  
...  
Keyword(s):  
Crystallization Temperature ◽  
Diblock Copolymers ◽  
Block Length ◽  
Morphological Transition ◽  
The Relationship

The crystallization temperature has an effect on the relationship between the lamellar twisting and the morphological transition of PLLA.

PMAA-based RAFT dispersion polymerization of MMA in ethanol: conductivity, block length and self-assembly

RSC Advances ◽  
2016 ◽  
Vol 6 (63) ◽  
pp. 58218-58225 ◽  
Author(s):  
Henmei Ni ◽  
Junxiu Liu ◽  
Kai Shi ◽  
Min Wu ◽  
Yadong Yang ◽  
...  
Keyword(s):  
Electrostatic Interaction ◽  
Self Assembly ◽  
Dispersion Polymerization ◽  
Diblock Copolymers ◽  
Block Length ◽  
Amphiphilic Diblock Copolymers ◽  
Positively Charged

Soluble amphiphilic diblock copolymers of PMAA-b-PMMA were positively charged in ethanol and the electrostatic interaction played a role in the process of self-assembly.

Micellisation and gelation of diblock copolymers of ethylene oxide and propylene oxide in aqueous solution, the effect of P-block length

1999 ◽  
Vol 16 (1-4) ◽  
pp. 73-91 ◽  
Author(s):  
Haydar Altinok ◽  
S.Keith Nixon ◽  
Peter A. Gorry ◽  
David Attwood ◽  
Colin Booth ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Ethylene Oxide ◽  
Propylene Oxide ◽  
Diblock Copolymers ◽  
Block Length
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