The effect of uni-axial orientation on macroporous membrane structure

Morehouse, Jason A.; Worrel, Leah S.; Taylor, Dana L.; Lloyd, Douglas R.; Freeman, Benny D.; Lawler, Desmond F.

doi:10.1007/s10934-006-5491-5

Cited by 25 publications

(33 citation statements)

References 8 publications

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“…The positive correlation shown by Knoell et al. [5] between some membrane physical properties and bacterial attachment and the findings of Morehouse et al [6][7][8] that pure water flux can be increased through membrane stretching have shown the possible advantages of controlling membrane pore shape.…”

Section: Introductionmentioning

confidence: 78%

“…However, Knoell et al did not control pore shape as a part of their study. Recent studies in our laboratory have demonstrated the impact of stretching on the aspect ratio of pores in microporous poly(vinylidene fluoride) (PVDF) membranes and the performance of these membranes [6][7][8]. In particular, elongating (or stretching) microporous PVDF membranes by 80% was seen to * Corresponding author.…”

Section: Introductionmentioning

confidence: 99%

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Modeling the stretching of microporous membranes

Morehouse

Lloyd

Freeman

et al. 2006

Journal of Membrane Science

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Section: Introductionmentioning

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Modeling the stretching of microporous membranes

Morehouse

Lloyd

Freeman

et al. 2006

Journal of Membrane Science

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“…For some membranes, there is a need to improve retention at the same or higher water permeability, and this has been achieved by 'stretched pore' membranes [13], where the elongated pores achieve higher permeability, along with lower molecular weight cutoff. Water reclamation by RO could be assisted by improved bio-fouling control strategies under development.…”

Section: Discussionmentioning

confidence: 99%

Improvement of Drinking Water (Surface and Ground) Quality Beneficial to Human Use

Mandour¹

2013

J Pollut Eff Cont

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Water quality guidelines can be used to identify constituents of concern in water, to determine the levels to which the constituents of water must be treated for drinking purposes. Membrane technology for the water cycle is playing an important role in the provision of safe water supply and treatment. The aim of this paper is to improve the water quality, to be valid for domestic purposes, through minimizing the health risks associated with either direct or indirect use of water. The need for standards and guidelines in water quality stems from the need to protect human health.

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“…The stretching of the polymer modifies both pore shape and size. Pore deformation is known to happen in three stages: (a) initial stretching aligns pores in the direction of force; (b) continued stretching results in uniform deformation of pores; (c) at a critical level of strain small polymer fibrils in the polymer matrix fracture resulting in the formation of macro voids in the polymer (Morehouse et al [16]). Figure 1 summarizes the mechanical performances of the samples with different stretching ratios.…”

Section: Porositymentioning

confidence: 99%

Oil spill remedy using bi-axially oriented polymer films

Saleem

Bazargan

Barford

et al. 2014

WIT Transactions on Ecology and the Environment

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Oil spill on water surface and shorelines has been a major source of water pollution. With the damaging impact to ecology and the long term effects of environmental pollution, demand for materials for cleaning up the water in a quick and effective way has increased. A number of sorbents have been recommended for the purpose of picking up oil from water. These range from natural products, such as inorganic porous products and organic biodegradable products. However, most of them reveal limited oil sorption capacity and also absorb water. Hence, it is felt that there is a need of producing a synthetic oil sorbent that not only has high sorption capacity but also, unlike other contemporary synthetic sorbents, proves to be strong and cost effective. In this paper, we are presenting a novel super oil sorbent polymer (oil-sap) sheet consisting of ultrahigh molecular weight polyethylene (UHMWPE). The sorbent exhibits an uptake capacity of (276 g/g) and pickup density of (58 g/cm 3 ). In addition, it comprises a mechanically strong structure (tensile modulus and breaking stress of 1332 MPa and 171 MPa respectively). The unique blend of uptake capacity and strength along with cost effectiveness of the raw material (polyethylene) makes these sheets feasible candidates for mass production and application.

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The effect of uni-axial orientation on macroporous membrane structure

Cited by 25 publications

References 8 publications

Modeling the stretching of microporous membranes

Modeling the stretching of microporous membranes

Improvement of Drinking Water (Surface and Ground) Quality Beneficial to Human Use

Oil spill remedy using bi-axially oriented polymer films

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