From Slow to Fast Self-Healing at Ambient Temperature of High-Modulus Reversible Poly(methacrylate) Networks. Single- and Dual-Dynamics and the Effect of Phase Separation

2021 ◽  
Author(s):  
D. Ehrhardt ◽  
J. Mangialetto ◽  
K. Van Durme ◽  
B. Van Mele ◽  
N. Van den Brande
Keyword(s):  
Phase Separation ◽  
Ambient Temperature ◽  
Self Healing ◽  
High Modulus

Autonomous self-healing polyisoprene elastomers with high modulus and good toughness based on the synergy of dynamic ionic crosslinks and highly disordered crystals

2020 ◽  
Vol 11 (41) ◽  
pp. 6549-6558
Author(s):  
Yohei Miwa ◽  
Mayu Yamada ◽  
Yu Shinke ◽  
Shoichi Kutsumizu
Keyword(s):  
Mechanical Properties ◽  
Room Temperature ◽  
Self Healing ◽  
High Modulus ◽  
Disordered Crystals ◽  
Ionic Crosslinks

We designed a novel polyisoprene elastomer with high mechanical properties and autonomous self-healing capability at room temperature facilitated by the coexistence of dynamic ionic crosslinks and crystalline components that slowly reassembled.

High modulus, fluorine-free self-healing anti-smudge coatings

2020 ◽  
Vol 145 ◽  
pp. 105703 ◽  
Author(s):  
Ajmir Khan ◽  
Kun Huang ◽  
Mohammed G. Sarwar ◽  
Muhammad Rabnawaz
Keyword(s):  
Self Healing ◽  
High Modulus

Electrochemical Intercalation of Oxygen in La2NiO4+x: Phase Separation below Ambient Temperature

1994 ◽  
Vol 6 (11) ◽  
pp. 2078-2084 ◽  
Author(s):  
I. Yazdi ◽  
S. Bhavaraju ◽  
J. F. DiCarlo ◽  
D. P. Scarfe ◽  
A. J. Jacobson
Keyword(s):  
Phase Separation ◽  
Ambient Temperature ◽  
Electrochemical Intercalation

Development of Flexible LEO-Resistant PI Films for Space Applications Using a Self-Healing Mechanism by Surface-Directed Phase Separation of Block Copolymers

2010 ◽  
Vol 2 (8) ◽  
pp. 2218-2225 ◽  
Author(s):  
Hartmut R. Fischer ◽  
Karin Tempelaars ◽  
Aat Kerpershoek ◽  
Theo Dingemans ◽  
M. Iqbal ◽  
...  
Keyword(s):  
Phase Separation ◽  
Block Copolymers ◽  
Self Healing ◽  
Space Applications

Self-healing polymers with PEG oligomer side chains based on multiple H-bonding and adhesion properties

2015 ◽  
Vol 6 (28) ◽  
pp. 5086-5092 ◽  
Author(s):  
Dandan Zhu ◽  
Qiang Ye ◽  
Xuemin Lu ◽  
Qinghua Lu
Keyword(s):  
Ambient Temperature ◽  
High Surface ◽  
Side Chain ◽  
Side Chains ◽  
Self Healing ◽  
Adhesion Properties ◽  
Surface Energies

Copolymers with a PEG oligomer side chain present high surface energies and adhesion properties; they also can quickly self-heal the crack interfaces spontaneously at ambient temperature.

scholarly journals Phase-Separation-Induced Anomalous Stiffening, Toughening, and Self-Healing of Polyacrylamide Gels

2015 ◽  
Vol 27 (43) ◽  
pp. 6990-6998 ◽  
Author(s):  
Koshiro Sato ◽  
Tasuku Nakajima ◽  
Toshiyuki Hisamatsu ◽  
Takayuki Nonoyama ◽  
Takayuki Kurokawa ◽  
...  
Keyword(s):  
Phase Separation ◽  
Self Healing ◽  
Polyacrylamide Gels

Dynamically Cross-Linked Polydimethylsiloxane Networks with Ambient-Temperature Self-Healing

2015 ◽  
Vol 48 (24) ◽  
pp. 8781-8788 ◽  
Author(s):  
Willi Schmolke ◽  
Norman Perner ◽  
Sebastian Seiffert
Keyword(s):  
Ambient Temperature ◽  
Self Healing

scholarly journals GRAPHENE OXIDE MICROCAPSULES (GOMs) WITH LINSEED OIL CORE VIA PICKERING EMULSION METHOD: EFFECT OF DISPERSE SPEED

2021 ◽  
Vol 22 (1) ◽  
pp. 213-222
Author(s):  
Nurul Nadiah Sahir ◽  
Noor Azlina Hassan ◽  
Norita Binti Hassan ◽  
Norhasnidawani Binti Johari
Keyword(s):  
Graphene Oxide ◽  
Phase Separation ◽  
Linseed Oil ◽  
Pickering Emulsion ◽  
Optical Microscope ◽  
Coating System ◽  
Self Healing ◽  
Promising Candidate ◽  
Emulsion Method ◽  
Method Effect

Graphene oxide microcapsules (GOMs) have been prepared through Pickering emulsion method by varying the disperse speed to study its effect on the GOM’s size. The GOMs were characterized through phase separation observation, polarized optical microscope (POM), and particle size analyser (PSA). Phase separation observation showed more viscous and cloudy emulsion was produced when the disperse speed was increased. After 24 hours, only 800 rpm emulsion did not show any phase separation. POM characterization depicted that increasing the emulsification energy led to the finer emulsion with the 1200 rpm sample showing the smallest microcapsule size of around 8 ?m. However, PSA analysis suggested that although the disperse speed controls the GOMs size, the amount of GO in the emulsion plays an important role for the microcapsule to maintain its stability. Emulsion produced at 800 rpm possesses satisfactory stability with GOMs diameter of 11.15 ?m. The result also suggested that graphene oxide encapsulated linseed oil may act as a promising candidate for healing microcapsules in a self-healing coating system. ABSTRAK: Mikrokapsul graphene oksida (GOMs) telah dihasilkan melalui kaedah emulsifikasi Pickering dengan memvariasikan tenaga pengemulsi untuk mengkaji kesannya terhadap saiz GOMs. GOMs dicirikan melalui pemerhatian pemisahan fasa, mikroskop optik polarisasi (POM) dan penganalisis saiz zarah (PSA). Pemerhatian pemisahan fasa menunjukkan emulsi yang lebih likat dan keruh dihasilkan apabila kelajuan pengemulsi meningkat. Selepas 24 jam, hanya emulsi 800 rpm tidak menunjukkan pemisahan fasa. Pencirian POM meunjukkan bahawa peningkatan tenaga pengemulsi menghasilkan emulsi yang lebih halus dengan sampel 1200 rpm menunjukkan saiz mikrokapsul terkecil, sekitar 8 ?m. Walau bagaimanapun, analisis PSA mencadangkan bahawa walaupun kelajuan pengemulsi mengawal saiz GOMs, jumlah GO dalam emulsi memainkan peranan penting untuk mengekalkan kestabilan mikrokapsul. Emulsi yang dihasilkan pada 800 rpm mempunyai kestabilan yang memuaskan dengan purata saiz GOMs sekitar 11.15 ?m. Berdasarkan dapatan kajian, graphene oksida yang terkandung minyak biji rami boleh menjadi salah satu mikrokapsul penyembuh dalam sistem cat auto-sembuh.

Two-phase anaerobic technology for domestic wastewater treatment at ambient temperature

1999 ◽  
Vol 39 (8) ◽  
pp. 115-122
Author(s):  
R. Arsov ◽  
I. Ribarova ◽  
N. Nikolov ◽  
G. Mihailov ◽  
Y. Topalova ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Phase Separation ◽  
Ambient Temperature ◽  
High Activity ◽  
Domestic Wastewater ◽  
Hydrodynamic Conditions ◽  
Monod Kinetics ◽  
Two Phase ◽  
Domestic Wastewater Treatment ◽  
Anaerobic Biomass

Anaerobic process phase separation was implemented in the present investigation, using two kinds of suspended anaerobic biomass – floccules and granules, respectively. Both phases of the process were proved to follow the classic Monod kinetics, the reported parameters of which indicate extremely high activity of the anaerobic biomass. This was achieved by providing appropriate hydrodynamic conditions in the bioreactors and creation of granulated (pelletized) biomass in the second one. The reasons and circumstances leading to these results are discussed, as well as the appropriate bioreactor construction schemes and the possibilities for implementation of the reported technology in practice and in coastal areas in particular.

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