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US 2017/0333602 A1Published application
Nanocomposite elastomers
AssigneeThe University of Queensland
InventorsNasim AMIRALIAN, Darren James MARTIN
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AssigneeThe University of Queensland
InventorsNasim AMIRALIAN, Darren James MARTIN
Estimating the term…
A composite material comprising an elastomer and nanocellulose. The nanocellulose may comprise a nanocellulose material derived from plants having C4 leaf anatomy, or a nanocellulose material derived from a plant material having a lesser amount of lignin than hemi-cellulose, or a nanocellulose having a hemicellulose content of from 25% to 55% by weight of the nanocellulose material, or a nanocellulose comprising nanofibrils having a diameter of up to 5 nm, or a nanocellulose comprising nanocellulose material of plant origin comprising nanocellulose particles or fibres having an aspect ratio of at least 250, or the composite material having a stiffness of not greater than 2.5 times the stiffness of the elastomer without the nanocellulose material being present, or the nanocellulose particles or fibres being derived from a plant material having a hemicellulose content of 30% or higher (w/w). The nanocellulose may be derived from arid Spinifex.
A composite material comprising an elastomer and nanocellulose, the nanocellulose comprising a nanocellulose material derived from plants having C4 leaf anatomy.
A composite material comprising an elastomer and nanocellulose, the nanocellulose comprising a nanocellulose material derived from a plant material having a lesser amount of lignin than hemicellulose.
A composite material comprising an elastomer and nanocellulose, the nanocellulose having a hemicellulose content of from 25% to 55% by weight of the nanocellulose material.
A composite material comprising an elastomer and nanocellulose, the nanocellulose comprising nanofibrils having a diameter of up to 5 nm, preferably a diameter within the range of 3-4 nm.
A composite material comprising an elastomer and nanocellulose, the nanocellulose comprising nanocellulose material of plant origin comprising nanocellulose particles or fibres having an aspect ratio of at least 250.
A composite material comprising an elastomer and nanocellulose, the composite material having a stiffness of not greater than 2.5 times the stiffness of the elastomer without the nanocellulose material being present.
A condom made from natural rubber latex or polyisoprene with tensile strength greater than 31 MPa, or greater than 35 MPa or greater than 40 MPa or greater than 45 MPa.
A condom made from natural rubber latex or polyisoprene with a normalised air burst pressure of greater than 0.036 kPa/μm or greater than 0.040 kPa/μm or greater than 0.045 kPa/μm or greater than 0.050 kPa/μm.
A condom made from natural rubber latex or polyisoprene with tensile strength greater than 31 MPa, or greater than 35 MPa or greater than 40 MPa or greater than 45 MPa or a normalised air burst pressure of greater than 0.036 kPa/μm or greater than 0.040 kPa/μm or greater than 0.045 kPa/μm or greater than 0.050 kPa/μm and a tensile stress at 500% extension of lower than 10 MPa or lower than 8 MPa or lower than 6 MPa or lower than 4 MPa or lower than 2 MPa or lower than 1.5 MPa or lower than 1 MPa.
A condom as claimed in 28 having a thickness of from 50-90 microns, or a thicknesses in the range 36-50 microns, or a thickness of less than 45 μm or less than 40 μm or less than 35 μm or less than 30 μm or less than 25 μm in the case that these are made using natural rubber latex or polyisoprene.
A condom made from polyurethane having a thickness of less than 10 μm and a normalised air burst pressure of greater than 0.036 kPa/μm or greater than 0.040 kPa/μm or greater than 0.045 kPa/μm or greater than 0.050 kPa/μm.
Dependencies are inferred from the claim text.