Supersonically blown nylon-6 nanofibers entangled with graphene flakes for water purification

Nanoscale ◽  
2015 ◽  
Vol 7 (45) ◽  
pp. 19027-19035 ◽  
Author(s):  
Jong-Gun Lee ◽  
Do-Yeon Kim ◽  
Mukund G. Mali ◽  
Salem S. Al-Deyab ◽  
Mark T. Swihart ◽  
...  
Keyword(s):  
Water Purification ◽  
Nylon 6 ◽  
Graphene Flakes

Fabricate nylon-6/graphene membrane via cold spray for water purification

2016 ◽  
Author(s):  
Jong-Gun Lee ◽  
◽  
Jong-Hyuk Lee ◽  
Tae Yoon Ohm ◽  
Do-Yeon Kim
Keyword(s):  
Cold Spray ◽  
Water Purification ◽  
Nylon 6 ◽  
Graphene Membrane

Electrically-charged recyclable graphene flakes entangled with electrospun nanofibers for the adsorption of organics for water purification

Nanoscale ◽  
2015 ◽  
Vol 7 (45) ◽  
pp. 19170-19177 ◽  
Author(s):  
Seongpil An ◽  
Hong Seok Jo ◽  
Kyo Yong Song ◽  
Mukund G. Mali ◽  
Salem S. Al-Deyab ◽  
...  
Keyword(s):  
Water Purification ◽  
Electrospun Nanofibers ◽  
Graphene Flakes ◽  
Electrically Charged

Polymer Morphology Revealed by Staining Techniques

1981 ◽  
Vol 39 ◽  
pp. 340-341
Author(s):  
A. C. Reimschuessel ◽  
V. Kramer
Keyword(s):  
Polymer Melt ◽  
Nylon 6 ◽  
Morphological Features ◽  
Negative Staining ◽  
Polymer Morphology ◽  
Crystallizable Polymer ◽  
Staining Techniques ◽  
Long Chain

Staining techniques can be used for either the identification of different polymers or for the differentiation of specific morphological domains within a given polymer. To reveal morphological features in nylon 6, we choose a technique based upon diffusion of the staining agent into accessible regions of the polymer.When a crystallizable polymer - such as nylon 6 - is cooled from the melt, lamellae form by chainfolding of the crystallizing long chain macromolecules. The regions between adjacent lamellae represent the less ordered amorphous domains into which stain can diffuse. In this process the lamellae will be “outlined” by the dense stain, giving rise to contrast comparable to that obtained by “negative” staining techniques.If the cooling of the polymer melt proceeds relatively slowly - as in molding operations - the lamellae are usually arranged in a radial manner. This morphology is referred to as spherulitic.

Dielectric behaviour of nylon 6

1979 ◽  
Vol 76 ◽  
pp. 501-506 ◽  
Author(s):  
Shawky Boutros ◽  
Hanna A. Rizk ◽  
Adly Hanna ◽  
Melad Gerges
Keyword(s):  
Nylon 6 ◽  
Dielectric Behaviour

A Possible Basis for Nondestructive Characterization of Ropes of Nylon 6

1997 ◽  
Vol 503 ◽  
Author(s):  
H. Jiang ◽  
M. K. Davis ◽  
R. K. Eby ◽  
P. Arsenovic
Keyword(s):  
Tensile Strength ◽  
Service Life ◽  
Fiber Diameter ◽  
Structural Parameters ◽  
Crystal Form ◽  
Nylon 6 ◽  
Remaining Service Life ◽  
Nondestructive Characterization ◽  
Fractional Content

ABSTRACTPhysical properties and structural parameters have been measured for ropes of nylon 6 as a function of the number of use operations. The fractional content of the α crystal form, sound velocity, birefringence, tensile strength and length all increase systematically and significantly with increasing the number of use operations. The fractional content of the γ crystal form and fiber diameter decrease with use. These trends indicate that the measurement of such properties and structural parameters, especially the length, provide a possible basis for establishing a reliable, rapid, and convenient nondestructive characterization method to predict the remaining service life of nylon 6 ropes.

Fouling Is the Beginning: Upcycling Biopolymer-Fouled Substrates for Fabricating High-Permeance Thin-Film Composite Polyamide Membranes

2020 ◽  
Author(s):  
Ruobin Dai ◽  
Hongyi Han ◽  
Tianlin Wang ◽  
Jiayi Li ◽  
Chuyang Y. Tang ◽  
...  
Keyword(s):  
Thin Film ◽  
High Pressure ◽  
End Of Life ◽  
Water Purification ◽  
Low Pressure ◽  
Polymeric Membranes ◽  
Membrane Recycling ◽  
Film Composite ◽  
Thin Film Composite ◽  
First Time

Commercial polymeric membranes are generally recognized to have low sustainability as membranes need to be replaced and abandoned after reaching the end of their life. At present, only techniques for downcycling end-of-life high-pressure membranes are available. For the first time, this study paves the way for upcycling fouled/end-of-life low-pressure membranes to fabricate new high-pressure membranes for water purification, forming a closed eco-loop of membrane recycling with significantly improved sustainability.

Sign in / Sign up

Export Citation Format

Share Document