Abstract: In one embodiment, a multiwall sheet can comprise: a first wall; a second wall; an intermediate wall disposed between the first wall and the second wall; a first set of ribs disposed between the first wall and the intermediate wall; a second set of ribs disposed between the second wall and the intermediate wall; a cavity disposed between adjacent ribs; wherein the multiwall sheet is configured to expand and/or collapse when a mechanical force (preferably shear force) is applied to the intermediate wall. Preferably the multiwall sheet has a flexural rigidity of greater than or equal to 10 N/mm.

Abstract: In one embodiment, a multiwall sheet can comprise: a first wall; a second wall; an intermediate wall disposed between the first wall and the second wall; a first set of ribs disposed between the first wall and the intermediate wall; a second set of ribs disposed between the second wall and the intermediate wall; a cavity disposed between adjacent ribs; wherein the multiwall sheet is configured to expand and/or collapse when a mechanical force (preferably shear force) is applied to the intermediate wall. Preferably the multiwall sheet has a flexural rigidity of greater than or equal to 10 N/mm.

Abstract: A multiwall sheet comprises a sheet, comprising walls, wherein the walls comprise a first wall; a second wall; and an outermost rib extending between the first wall and the second wall, wherein the first wall extends longitudinally past the outermost rib to a first wall end and wherein the second wall extends longitudinally past the outermost rib to a second wall end; and an end cap comprising a top wall having a top wall end, a bottom wall having a bottom wall end, and a connecting wall disposed between the top wall end and the bottom wall end; wherein the end cap is disposed over the first wall end and the second wall end and wherein the top wall and the bottom wall extend longitudinally along the first wall and the second wall past the outermost rib.

Abstract: In one embodiment, a multiwall sheet comprises: non-intersecting polymer walls comprising outer layers and transverse layers. The transverse layers intersect the walls to form cells. The multiwall sheet has a non-uniform cell density. In another embodiment, a multiwall sheet can comprise: non-intersecting polymer walls comprising outer layers and a transverse layer and/or a divider. The transverse layer and/or the divider extends from one of the polymer walls to another of the polymer walls to form cells. The multiwall sheet has a non-uniform cell density. In yet another embodiment, a multiwall sheet comprises: non-intersecting polymer walls comprising outer layers and transverse layers. The transverse layers intersect the walls to form cells. The multiwall sheet has a different number of inner layers, transverse layers, and/or dividers, in different portions of the sheet. The multiwall sheets can be used, for example, in a naturally light structure.

Abstract: Disclosed is a sheet that comprises protrusions comprising a first portion extending from a base by a second portion where a second portion diameter is less than a first portion diameter. Also disclosed is a sheet that comprises a first portion and a second portion extending from a symmetry plane, where the protrusions repeat across a length of the sheet along the symmetry plane where the first portion has a first portion diameter and the second portion has a second portion diameter and where the second portion diameter is less than the first portion diameter. A sheet comprising a plurality of cavities across a width of the sheet where each cavity extends the length of the sheet and the cavity has an opening diameter that is smaller than a body diameter is also disclosed.

Abstract: In one embodiment, the method for making a polymer article comprises: orienting polymer chains in one direction more than any other direction to form an oriented article, contacting the oriented article with a foaming agent, and foaming the material to form the reflective polymer article comprising planar cell structures having a length “l” and a thickness “t”.

Abstract: Disclosed herein is a multiwall sheet that comprises a first wall, a second wall, an intermediate wall disposed between the first wall and the second wall, a first set of ribs disposed between the first wall and the intermediate wall, and a second set of ribs disposed between the second wall and the intermediate wall. No ribs are in direct vertical alignment so as to align from the first wall to the second wall and no ribs are on a side of the first wall opposite the intermediate wall or on a side of the second wall opposite the intermediate wall. Also disclosed is a method for making a multiwall sheet.

Abstract: Disclosed herein is a hollow multi-wall structural component comprising a plurality of spaced-apart sheets that transmit an incident radiation, and connected with reinforcing members; wherein at least a portion of one surface of at least one of the sheets comprises a plurality of radiation transmission-enhancing elements. Methods for forming the hollow multi-wall structural component are also described.

Abstract: Edge stiffened corrugated polymeric sheet material can be utilized as storm panels for mounting about a perimeter surface of an opening so as to protect the opening from wind and impact loads. The panels can include a corrugated sheet material having a corrugated contiguous band horizontally extending at about an end of the top and the bottom, wherein the corrugated contiguous band is complementary and contiguous to the plurality of corrugations of the corrugated sheet panel. The complementary and contiguous corrugated band can be configured to sandwich the sheet material. The panel may also include, individually or in combination, a contiguous band sandwiching the polymeric sheet material at a terminal end of each side and extending vertically from the top to the bottom. The panels provide wind and impact load protection for the opening.

Abstract: A foamable polymeric composition can comprise a polymer, a blowing agent cage material, and a blowing agent. The blowing agent cage material is selected from the group consisting of zeolite imidazolate framework, metal organic framework, carbon cage structure, and combinations comprising at least one of the foregoing. In one embodiment, the composition can be formed by mixing the polymer with the blowing agent cage material to form a mixture, introducing a blowing agent to the mixture, and forming the mixture into pellets.

Abstract: A multiwall sheet comprises a sheet, comprising walls, wherein the walls comprise a first wall; a second wall; and an outermost rib extending between the first wall and the second wall, wherein the first wall extends longitudinally past the outermost rib to a first wall end and wherein the second wall extends longitudinally past the outermost rib to a second wall end; and an end cap comprising a top wall having a top wall end, a bottom wall having a bottom wall end, and a connecting wall disposed between the top wall end and the bottom wall end; wherein the end cap is disposed over the first wall end and the second wall end and wherein the top wall and the bottom wall extend longitudinally along the first wall and the second wall past the outermost rib.

Abstract: A multiwall sheet can comprise plastic walls, wherein the walls comprise a first wall; a second wall; and a transverse wall, wherein the first wall, the second wall, and the transverse wall extend longitudinally; and a rib extending between adjacent walls; and a sound insulating material disposed in an area between two adjacent walls, wherein the sound insulating material has a velocity of sound greater than the velocity of sound of the plastic walls. A method of sound insulating a structure can comprise: filling the multiwall sheet with a sound insulating material; and attaching the multiwall sheet to the structure.

Abstract: A multiwall sheet can comprise walls, wherein the walls include: a first wall; a second wall; and a transverse wall, wherein the first wall, the second wall, and the transverse wall extend longitudinally; and a rib extending between adjacent walls, wherein a layer is formed by two adjacent walls; wherein the layer is filled with a nanoporous foam material; and wherein the multiwall sheet comprises a normalized thermal conductivity value of less than or equal to 1.00 W·m/kg·K. A method of making a multiwall sheet can comprise coextruding the multiwall sheet described above with a nanoporous foam material; wherein the layer is filled with a nanoporous foam material during coextrusion.

Abstract: Disclosed herein are connectors for panels. In one embodiment a panel connector comprises, a connector comprising a rib-hinging geometry, wherein the rib-hinging geometry comprises living hinges, and wherein the rib-hinging geometry is capable of expanding in area. In another embodiment, a panel assembly is disclosed. The panel assembly comprises, a connector comprising a rib-hinging geometry, wherein the rib-hinging geometry comprises living hinges, a socket comprising an internal geometry, wherein the connector can be assembled to the internal geometry, and wherein the rib-hinging geometry is capable of expanding in area.

Abstract: Disclosed herein is a foam that includes a polysiloxane block copolymer; the polysiloxane block copolymer including a first block that comprises a polysiloxane block and a second block that includes an organic polymer; the second block not containing a polysiloxane; the polysiloxane block being about 5 to about 45 repeat units; the foam having average pore sizes of less than or equal to about 100 nanometers.

Abstract: Disclosed herein are connectors for panels. In one embodiment a panel connector comprises, a connector comprising a rib-hinging geometry, wherein the rib-hinging geometry comprises living hinges, and wherein the rib-hinging geometry is capable of expanding in area. In another embodiment, a panel assembly is disclosed. The panel assembly comprises, a connector comprising a rib-hinging geometry, wherein the rib-hinging geometry comprises living hinges, a socket comprising an internal geometry, wherein the connector can be assembled to the internal geometry, and wherein the rib-hinging geometry is capable of expanding in area.

Abstract: Disclosed herein are connectors for panels. In one embodiment a panel connector comprises, a connector comprising a rib-hinging geometry, wherein the rib-hinging geometry comprises living hinges, and wherein the rib-hinging geometry is capable of expanding in area. In another embodiment, a panel assembly is disclosed. The panel assembly comprises, a connector comprising a rib-hinging geometry, wherein the rib-hinging geometry comprises living hinges, a socket comprising an internal geometry, wherein the connector can be assembled to the internal geometry, and wherein the rib-hinging geometry is capable of expanding in area.

Abstract: Disclosed herein are connectors for panels. In one embodiment a panel connector comprises, a connector comprising a rib-hinging geometry, wherein the rib-hinging geometry comprises living hinges, and wherein the rib-hinging geometry is capable of expanding in area. In another embodiment, a panel assembly is disclosed. The panel assembly comprises, a connector comprising a rib-hinging geometry, wherein the rib-hinging geometry comprises living hinges, a socket comprising an internal geometry, wherein the connector can be assembled to the internal geometry, and wherein the rib-hinging geometry is capable of expanding in area.

Abstract: In one embodiment, a multiwall sheet comprises a first sheet comprising an inner surface and an outer surface, a second sheet comprising a first surface and a second surface; and a rib disposed between the inner surface and the first surface. The outer layer can have surface features and has a surface area of greater than or equal to 140% of a planar, flat, non-profiled surface area for a same unit area.

Abstract: Disclosed herein are multiwall panels comprising micro-scale surface features and methods of making the same. In one embodiment, a multiwall panel is disclosed. The multiwall panel comprises, a top sheet, a bottom sheet, a rib disposed between and connected to the top sheet and the bottom sheet, and a micro-scale surface feature disposed on a surface of the multiwall panel, wherein the micro-scale surface feature comprises a width measured at a base of the surface feature, wherein the width is about 30 micrometers to about 3 millimeters. In another embodiment, a process of forming multiwall panels is disclosed. In yet another embodiment, a naturally lit structure is disclosed.