title: Protein-Intercalated Bentonite as Nano-Reinforcement in Bloodmeal-Based Bioplastics

authors: Shamsuddin, Rashid M.

subjects: Science & Technology

abstract: Novatein Thermoplastic Protein (NTP) is a biopolymer produced by modifying bloodmeal to a thermoplastic material, but requires reinforcement to improve mechanical properties. Proteinintercalated calcium (CaBt) and sodium bentonite (NaBt) were investigated as nano-scale reinforcements in NTP. These were prepared by recovering proteins from meat processing wastewater called stickwater, thereby reducing treatment cost and intercalating protein into clay layers in a single step. Using stickwater-modified NaBt improved the composite’s tensile strength by 23% (at 0.5 parts per hundred bloodmeal, pphBM) and Young’s modulus by 17% compared to standard NTP. Stickwater treatment greatly improved the compatibility of bentonite with NTP compared to gelatin-treated bentonite whose resulting composites only had similar or slightly improved mechanical properties. The improved mechanical properties are parallel with other improvements observed in thermal, crystallinity and filler distribution. Potential applications include plant pots and seedling trays for plant nursery and agricultural disposable tools such as weasand clips, nails and barbs.

text: Protein-Intercalated Bentonite as Nano-Reinforcement in Bloodmeal-Based Bioplastics Novatein Thermoplastic Protein (NTP) is a biopolymer produced by modifying bloodmeal to a thermoplastic material, but requires reinforcement to improve mechanical properties. Proteinintercalated calcium (CaBt) and sodium bentonite (NaBt) were investigated as nano-scale reinforcements in NTP. These were prepared by recovering proteins from meat processing wastewater called stickwater, thereby reducing treatment cost and intercalating protein into clay layers in a single step. Using stickwater-modified NaBt improved the composite’s tensile strength by 23% (at 0.5 parts per hundred bloodmeal, pphBM) and Young’s modulus by 17% compared to standard NTP. Stickwater treatment greatly improved the compatibility of bentonite with NTP compared to gelatin-treated bentonite whose resulting composites only had similar or slightly improved mechanical properties. The improved mechanical properties are parallel with other improvements observed in thermal, crystallinity and filler distribution. Potential applications include plant pots and seedling trays for plant nursery and agricultural disposable tools such as weasand clips, nails and barbs.

year: 2015

title: Systematic lithostratigraphy of the Neogene succession exposed in central parts of Hawke’s Bay Basin, eastern North Island, New Zealand

authors: Bland, Kyle J.

subjects: lithostratigraphy

abstract: This report presents a systematic lithostratigraphy for the Neogene (Miocene–Recent) sedimentary succession in central parts of Hawke’s Bay Basin in eastern North Island, New Zealand. It has been built up chiefly from strata exposed in outcrop, but petroleum exploration drill hole data have also been incorporated to produce this stratigraphic synthesis. Most of the strata exposed in this part of the basin are of Late Miocene (Tongaporutuan, local New Zealand Stage) to Recent age, and the majority of this report focuses on these starta, with brief description of Middle and Early Miocene formations. A companion PR report (Kamp et al. 2007) contains stratigraphic columns for sections through the Neogene succession described in this report.

text: Systematic lithostratigraphy of the Neogene succession exposed in central parts of Hawke’s Bay Basin, eastern North Island, New Zealand This report presents a systematic lithostratigraphy for the Neogene (Miocene–Recent) sedimentary succession in central parts of Hawke’s Bay Basin in eastern North Island, New Zealand. It has been built up chiefly from strata exposed in outcrop, but petroleum exploration drill hole data have also been incorporated to produce this stratigraphic synthesis. Most of the strata exposed in this part of the basin are of Late Miocene (Tongaporutuan, local New Zealand Stage) to Recent age, and the majority of this report focuses on these starta, with brief description of Middle and Early Miocene formations. A companion PR report (Kamp et al. 2007) contains stratigraphic columns for sections through the Neogene succession described in this report.

year: 2007

title: Tōku tūrangawaewae: Culture, identity, and belonging for Māori homeless people

authors: Groot, Shiloh Ann Maree

subjects: Māori

abstract: To be Māori is to have a tūrangawaewae (a place of strength and belonging, a place to stand). If so, is it conceivable that Māori are homeless in our own homeland? This presentation focuses on the experiences of two Māori homeless people who took part in a 3-year research project conducted in partnership with not-for-profit service agencies. Previous research into street homelessness has all but ignored indigenous histories, circumstances and worldviews. The situation in which indigenous people find themselves requires us to rethink how we understand homelessness and the development of culturally based roles and identities on the street and beyond.

text: Tōku tūrangawaewae: Culture, identity, and belonging for Māori homeless people To be Māori is to have a tūrangawaewae (a place of strength and belonging, a place to stand). If so, is it conceivable that Māori are homeless in our own homeland? This presentation focuses on the experiences of two Māori homeless people who took part in a 3-year research project conducted in partnership with not-for-profit service agencies. Previous research into street homelessness has all but ignored indigenous histories, circumstances and worldviews. The situation in which indigenous people find themselves requires us to rethink how we understand homelessness and the development of culturally based roles and identities on the street and beyond.

year: 2010