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In normal practice,ease in processing comes at the expense of reduction in mechanical properties.Here we show that by controlled synthesis,it is possible to synthesize a wide range of linear Ultra High Molecular Weight Polyethylenes that can be stretched uniaxially into tapes.In these uniaxially drawn tapes the bundles of fibres align themselves in a preferred crystal plane orientation accounting for an extraordinary high tensile modulus.The stretching process is accomplished in the solid state,without any solvent requirement.The ease in processing combined with controlled synthesis provides a unique opportunity to follow the influence of molar mass on mechanical properties.